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@@ -0,0 +1,2365 @@
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+using System;
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+using System.Data;
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+using System.Xml;
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+using System.Data.SqlClient;
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+using System.Collections;
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+
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+namespace SQLHelper
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+{
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+ /// <summary>
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+ /// SqlServer数据访问帮助类
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+ /// </summary>
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+ public sealed class SqlHelper
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+ {
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+ #region 私有构造函数和方法
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+ private SqlHelper() { }
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+ /// <summary>
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+ /// 将SqlParameter参数数组(参数值)分配给SqlCommand命令.
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+ /// 这个方法将给任何一个参数分配DBNull.Value;
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+ /// 该操作将阻止默认值的使用.
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+ /// </summary>SqlHelperSqlHelper
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+ /// <param>命令名</param>
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+ /// <param>SqlParameters数组</param>
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+ private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters)
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+ {
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+ if (command == null)
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+ throw new ArgumentNullException("command is null");
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+ if (commandParameters != null)
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+ {
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+ foreach (SqlParameter p in commandParameters)
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+ {
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+ if (p != null)
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+ {
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+ // 检查未分配值的输出参数,将其分配以DBNull.Value.
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+ if ((p.Direction == ParameterDirection.InputOutput || p.Direction == ParameterDirection.Input) &&
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+ (p.Value == null))
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+ {
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+ p.Value = DBNull.Value;
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+ }
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+ command.Parameters.Add(p);
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+ }
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+ }
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+ }
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+ }
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+
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+ /// <summary>
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+ /// 将DataRow类型的列值分配到SqlParameter参数数组.
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+ /// </summary>
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+ /// <param>要分配值的SqlParameter参数数组</param>
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+ /// <param>将要分配给存储过程参数的DataRow</param>
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+ private static void AssignParameterValues(SqlParameter[] commandParameters, DataRow dataRow)
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+ {
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+ if ((commandParameters == null) || (dataRow == null))
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+ {
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+ return;
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+ }
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+ int i = 0;
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+ // 设置参数值
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+ foreach (SqlParameter commandParameter in commandParameters)
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+ {
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+ // 创建参数名称,如果不存在,只抛出一个异常.
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+ if (commandParameter.ParameterName == null || commandParameter.ParameterName.Length <= 1)
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+ throw new Exception(string.Format("请提供参数{0}一个有效的名称{1}.", i, commandParameter.ParameterName));
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+ // 从dataRow的表中获取为参数数组中数组名称的列的索引.
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+ // 如果存在和参数名称相同的列,则将列值赋给当前名称的参数.
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+ if (dataRow.Table.Columns.IndexOf(commandParameter.ParameterName.Substring(1)) != -1)
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+ commandParameter.Value = dataRow[commandParameter.ParameterName.Substring(1)];
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+ i++;
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+ }
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+ }
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+
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+ /// <summary>
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+ /// 将一个对象数组分配给SqlParameter参数数组.
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+ /// </summary>
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+ /// <param>要分配值的SqlParameter参数数组</param>
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+ /// <param>将要分配给存储过程参数的对象数组</param>
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+ private static void AssignParameterValues(SqlParameter[] commandParameters, object[] parameterValues)
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+ {
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+ if ((commandParameters == null) || (parameterValues == null))
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+ {
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+ return;
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+ }
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+ // 确保对象数组个数与参数个数匹配,如果不匹配,抛出一个异常.
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+ if (commandParameters.Length != parameterValues.Length)
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+ {
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+ throw new ArgumentException("参数值个数与参数不匹配.");
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+ }
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+ // 给参数赋值
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+ for (int i = 0, j = commandParameters.Length; i < j; i++)
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+ {
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+ // If the current array value derives from IDbDataParameter, then assign its Value property
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+ if (parameterValues[i] is IDbDataParameter)
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+ {
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+ IDbDataParameter paramInstance = (IDbDataParameter)parameterValues[i];
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+ if (paramInstance.Value == null)
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+ {
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+ commandParameters[i].Value = DBNull.Value;
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+ }
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+ else
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+ {
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+ commandParameters[i].Value = paramInstance.Value;
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+ }
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+ }
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+ else if (parameterValues == null)
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+ {
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+ commandParameters[i].Value = DBNull.Value;
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+ }
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+ else
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+ {
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+ commandParameters[i].Value = parameterValues;
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+ }
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+ }
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+ }
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+
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+ /// <summary>
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+ /// 预处理用户提供的命令,数据库连接/事务/命令类型/参数
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+ /// </summary>
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+ /// <param>要处理的SqlCommand</param>
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+ /// <param>数据库连接</param>
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+ /// <param>一个有效的事务或者是null值</param>
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+ /// <param>命令类型 (存储过程,命令文本, 其它.)</param>
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+ /// <param>存储过程名或都T-SQL命令文本</param>
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+ /// <param>和命令相关联的SqlParameter参数数组,如果没有参数为'null'</param>
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+ /// <param><c>true</c> 如果连接是打开的,则为true,其它情况下为false.</param>
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+ private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, out bool mustCloseConnection)
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+ {
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+ if (command == null)
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+ throw new ArgumentNullException("command is null");
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+ if (commandText == null || commandText.Length == 0)
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+ throw new ArgumentNullException("commandText is empty");
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+
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+ // If the provided connection is not open, we will open it
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+ if (connection.State != ConnectionState.Open)
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+ {
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+ mustCloseConnection = true;
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+ connection.Open();
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+ }
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+ else
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+ {
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+ mustCloseConnection = false;
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+ }
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+ // 给命令分配一个数据库连接.
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+ command.Connection = connection;
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+ // 设置命令文本(存储过程名或SQL语句)
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+ command.CommandText = commandText;
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+ // 分配事务
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+ if (transaction != null)
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+ {
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+ if (transaction.Connection == null)
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+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
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+ command.Transaction = transaction;
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+ }
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+ // 设置命令类型.
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+ command.CommandType = commandType;
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+ // 分配命令参数
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+ if (commandParameters != null)
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+ {
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+ AttachParameters(command, commandParameters);
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+ }
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+ return;
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+ }
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+ #endregion 私有构造函数和方法结束
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+
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+ #region ExecuteNonQuery命令
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+ /// <summary>
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+ /// 执行指定连接字符串,类型的SqlCommand.
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+ /// </summary>
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+ /// <remarks>
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+ /// 示例:
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+ /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders");
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+ /// </remarks>
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+ /// <param>一个有效的数据库连接字符串</param>
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+ /// <param>命令类型 (存储过程,命令文本, 其它.)</param>
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+ /// <param>存储过程名称或SQL语句</param>
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+ /// <returns>返回命令影响的行数</returns>
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+ public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText)
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+ {
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+ return ExecuteNonQuery(connectionString, commandType, commandText, (SqlParameter[])null);
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+ }
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+
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+ /// <summary>
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+ /// 执行指定连接字符串,类型的SqlCommand.如果没有提供参数,不返回结果.
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+ /// </summary>
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+ /// <remarks>
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+ /// 示例:
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+ /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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+ /// </remarks>
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+ /// <param>一个有效的数据库连接字符串</param>
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+ /// <param>命令类型 (存储过程,命令文本, 其它.)</param>
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+ /// <param>存储过程名称或SQL语句</param>
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+ /// <param>SqlParameter参数数组</param>
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+ /// <returns>返回命令影响的行数</returns>
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+ public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
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+ {
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+ if (connectionString == null || connectionString.Length == 0)
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+ throw new ArgumentNullException("connectionString");
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+ using (SqlConnection connection = new SqlConnection(connectionString))
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+ {
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+ connection.Open();
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+ return ExecuteNonQuery(connection, commandType, commandText, commandParameters);
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+ }
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+ }
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+
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+ /// <summary>
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+ /// 执行指定连接字符串的存储过程,将对象数组的值赋给存储过程参数,
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+ /// 此方法需要在参数缓存方法中探索参数并生成参数.
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+ /// </summary>
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+ /// <remarks>
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+ /// 这个方法没有提供访问输出参数和返回值.
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+ /// 示例:
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+ /// int result = ExecuteNonQuery(connString, "PublishOrders", 24, 36);
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+ /// </remarks>
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+ /// <param>一个有效的数据库连接字符串/param>
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+ /// <param>存储过程名称</param>
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+ /// <param>分配到存储过程输入参数的对象数组</param>
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+ /// <returns>返回受影响的行数</returns>
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+ public static int ExecuteNonQuery(string connectionString, string spName, params object[] parameterValues)
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+ {
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+ if (connectionString == null || connectionString.Length == 0)
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+ throw new ArgumentNullException("connectionString");
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+ if (spName == null || spName.Length == 0)
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+ throw new ArgumentNullException("spName");
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+
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+ // 如果存在参数值
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+ if ((parameterValues != null) && (parameterValues.Length > 0))
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+ {
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+ // 从探索存储过程参数(加载到缓存)并分配给存储过程参数数组.
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+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
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+ // 给存储过程参数赋值
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+ AssignParameterValues(commandParameters, parameterValues);
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+ return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
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+ }
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+ else
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+ {
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+ // 没有参数情况下
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+ return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
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+ }
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+ }
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+
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+ /// <summary>
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+ /// 执行指定数据库连接对象的命令
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+ /// </summary>
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+ /// <remarks>
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+ /// 示例:
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+ /// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders");
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+ /// </remarks>
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+ /// <param>一个有效的数据库连接对象</param>
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+ /// <param>命令类型(存储过程,命令文本或其它.)</param>
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+ /// <param>存储过程名称或T-SQL语句</param>
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+ /// <returns>返回影响的行数</returns>
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+ public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText)
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+ {
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+ return ExecuteNonQuery(connection, commandType, commandText, (SqlParameter[])null);
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+ }
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+
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+ /// <summary>
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+ /// 执行指定数据库连接对象的命令
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+ /// </summary>
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+ /// <remarks>
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+ /// 示例:
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+ /// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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+ /// </remarks>
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+ /// <param>一个有效的数据库连接对象</param>
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+ /// <param>命令类型(存储过程,命令文本或其它.)</param>
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+ /// <param>T存储过程名称或T-SQL语句</param>
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+ /// <param>SqlParamter参数数组</param>
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+ /// <returns>返回影响的行数</returns>
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+ public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
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+ {
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+ if (connection == null)
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+ throw new ArgumentNullException("connection");
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+ // 创建SqlCommand命令,并进行预处理
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+ SqlCommand cmd = new SqlCommand();
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+ bool mustCloseConnection = false;
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+ PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
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+
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+ // Finally, execute the command
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+ int retval = cmd.ExecuteNonQuery();
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+
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+ // 清除参数,以便再次使用.
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+ cmd.Parameters.Clear();
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+ if (mustCloseConnection)
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+ connection.Close();
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+ return retval;
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+ }
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+
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+ /// <summary>
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+ /// 执行指定数据库连接对象的命令,将对象数组的值赋给存储过程参数.
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+ /// </summary>
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+ /// <remarks>
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+ /// 此方法不提供访问存储过程输出参数和返回值
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+ /// 示例:
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+ /// int result = ExecuteNonQuery(conn, "PublishOrders", 24, 36);
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+ /// </remarks>
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+ /// <param>一个有效的数据库连接对象</param>
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+ /// <param>存储过程名</param>
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+ /// <param>分配给存储过程输入参数的对象数组</param>
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+ /// <returns>返回影响的行数</returns>
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+ public static int ExecuteNonQuery(SqlConnection connection, string spName, params object[] parameterValues)
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+ {
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+ if (connection == null) throw new ArgumentNullException("connection");
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+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
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+ // 如果有参数值
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+ if ((parameterValues != null) && (parameterValues.Length > 0))
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+ {
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+ // 从缓存中加载存储过程参数
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+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
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+ // 给存储过程分配参数值
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+ AssignParameterValues(commandParameters, parameterValues);
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+ return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
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+ }
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+ else
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+ {
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+ return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
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+ }
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+ }
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+
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+ /// <summary>
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+ /// 执行带事务的SqlCommand.
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+ /// </summary>
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+ /// <remarks>
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+ /// 示例.:
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+ /// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders");
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+ /// </remarks>
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+ /// <param>一个有效的数据库连接对象</param>
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+ /// <param>命令类型(存储过程,命令文本或其它.)</param>
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+ /// <param>存储过程名称或T-SQL语句</param>
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+ /// <returns>返回影响的行数/returns>
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+ public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText)
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+ {
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+ return ExecuteNonQuery(transaction, commandType, commandText, (SqlParameter[])null);
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+ }
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+
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+ /// <summary>
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+ /// 执行带事务的SqlCommand(指定参数).
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+ /// </summary>
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+ /// <remarks>
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+ /// 示例:
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+ /// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
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+ /// </remarks>
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+ /// <param>一个有效的数据库连接对象</param>
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+ /// <param>命令类型(存储过程,命令文本或其它.)</param>
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+ /// <param>存储过程名称或T-SQL语句</param>
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+ /// <param>SqlParamter参数数组</param>
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+ /// <returns>返回影响的行数</returns>
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+ public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
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+ {
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+ if (transaction == null)
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+ throw new ArgumentNullException("transaction");
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+ if (transaction != null && transaction.Connection == null)
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+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
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+ // 预处理
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+ SqlCommand cmd = new SqlCommand();
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+ bool mustCloseConnection = false;
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+ PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
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+
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+ // 执行
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+ int retval = cmd.ExecuteNonQuery();
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|
|
+
|
|
|
+ // 清除参数集,以便再次使用.
|
|
|
+ cmd.Parameters.Clear();
|
|
|
+ return retval;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行带事务的SqlCommand(指定参数值).
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值
|
|
|
+ /// 示例:
|
|
|
+ /// int result = ExecuteNonQuery(conn, trans, "PublishOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回受影响的行数</returns>
|
|
|
+ public static int ExecuteNonQuery(SqlTransaction transaction, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+ // 给存储过程参数赋值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ // 调用重载方法
|
|
|
+ return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion ExecuteNonQuery方法结束
|
|
|
+
|
|
|
+ #region ExecuteDataset方法
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ return ExecuteDataset(connectionString, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>SqlParamters参数数组</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+ // 创建并打开数据库连接对象,操作完成释放对象.
|
|
|
+ using (SqlConnection connection = new SqlConnection(connectionString))
|
|
|
+ {
|
|
|
+ connection.Open();
|
|
|
+ // 调用指定数据库连接字符串重载方法.
|
|
|
+ return ExecuteDataset(connection, commandType, commandText, commandParameters);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,直接提供参数值,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值.
|
|
|
+ /// 示例:
|
|
|
+ /// DataSet ds = ExecuteDataset(connString, "GetOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中检索存储过程参数
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
|
|
|
+ // 给存储过程参数分配值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名或T-SQL语句</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ return ExecuteDataset(connection, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,指定存储过程参数,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名或T-SQL语句</param>
|
|
|
+ /// <param>SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+ // 预处理
|
|
|
+ SqlCommand cmd = new SqlCommand();
|
|
|
+ bool mustCloseConnection = false;
|
|
|
+ PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
|
|
|
+
|
|
|
+ // 创建SqlDataAdapter和DataSet.
|
|
|
+ using (SqlDataAdapter da = new SqlDataAdapter(cmd))
|
|
|
+ {
|
|
|
+ DataSet ds = new DataSet();
|
|
|
+ // 填充DataSet.
|
|
|
+ da.Fill(ds);
|
|
|
+
|
|
|
+ cmd.Parameters.Clear();
|
|
|
+ if (mustCloseConnection)
|
|
|
+ connection.Close();
|
|
|
+ return ds;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,指定参数值,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输入参数和返回值.
|
|
|
+ /// 示例.:
|
|
|
+ /// DataSet ds = ExecuteDataset(conn, "GetOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(SqlConnection connection, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 比缓存中加载存储过程参数
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+ // 给存储过程参数分配值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return ExecuteDataset(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定事务的命令,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名或T-SQL语句</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ return ExecuteDataset(transaction, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定事务的命令,指定参数,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名或T-SQL语句</param>
|
|
|
+ /// <param>SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ // 预处理
|
|
|
+ SqlCommand cmd = new SqlCommand();
|
|
|
+ bool mustCloseConnection = false;
|
|
|
+ PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
|
|
|
+
|
|
|
+ // 创建 DataAdapter & DataSet
|
|
|
+ using (SqlDataAdapter da = new SqlDataAdapter(cmd))
|
|
|
+ {
|
|
|
+ DataSet ds = new DataSet();
|
|
|
+ da.Fill(ds);
|
|
|
+ cmd.Parameters.Clear();
|
|
|
+ return ds;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定事务的命令,指定参数值,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输入参数和返回值.
|
|
|
+ /// 示例.:
|
|
|
+ /// DataSet ds = ExecuteDataset(trans, "GetOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>事务</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet</returns>
|
|
|
+ public static DataSet ExecuteDataset(SqlTransaction transaction, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+ // 给存储过程参数分配值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion ExecuteDataset数据集命令结束
|
|
|
+
|
|
|
+ #region ExecuteReader 数据阅读器
|
|
|
+ /// <summary>
|
|
|
+ /// 枚举,标识数据库连接是由SqlHelper提供还是由调用者提供
|
|
|
+ /// </summary>
|
|
|
+ private enum SqlConnectionOwnership
|
|
|
+ {
|
|
|
+ /// <summary>由SqlHelper提供连接</summary>
|
|
|
+ Internal,
|
|
|
+ /// <summary>由调用者提供连接</summary>
|
|
|
+ External
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的数据阅读器.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 如果是SqlHelper打开连接,当连接关闭DataReader也将关闭.
|
|
|
+ /// 如果是调用都打开连接,DataReader由调用都管理.
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>一个有效的事务,或者为 'null'</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名或T-SQL语句</param>
|
|
|
+ /// <param>SqlParameters参数数组,如果没有参数则为'null'</param>
|
|
|
+ /// <param>标识数据库连接对象是由调用者提供还是由SqlHelper提供</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ private static SqlDataReader ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+
|
|
|
+ bool mustCloseConnection = false;
|
|
|
+ // 创建命令
|
|
|
+ SqlCommand cmd = new SqlCommand();
|
|
|
+ try
|
|
|
+ {
|
|
|
+ PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
|
|
|
+
|
|
|
+ // 创建数据阅读器
|
|
|
+ SqlDataReader dataReader;
|
|
|
+ if (connectionOwnership == SqlConnectionOwnership.External)
|
|
|
+ {
|
|
|
+ dataReader = cmd.ExecuteReader();
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
|
|
|
+ }
|
|
|
+
|
|
|
+ // 清除参数,以便再次使用..
|
|
|
+ // HACK: There is a problem here, the output parameter values are fletched
|
|
|
+ // when the reader is closed, so if the parameters are detached from the command
|
|
|
+ // then the SqlReader can磘 set its values.
|
|
|
+ // When this happen, the parameters can磘 be used again in other command.
|
|
|
+ bool canClear = true;
|
|
|
+ foreach (SqlParameter commandParameter in cmd.Parameters)
|
|
|
+ {
|
|
|
+ if (commandParameter.Direction != ParameterDirection.Input)
|
|
|
+ canClear = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (canClear)
|
|
|
+ {
|
|
|
+ cmd.Parameters.Clear();
|
|
|
+ }
|
|
|
+ return dataReader;
|
|
|
+ }
|
|
|
+ catch
|
|
|
+ {
|
|
|
+ if (mustCloseConnection)
|
|
|
+ connection.Close();
|
|
|
+ throw;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的数据阅读器.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名或T-SQL语句</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ return ExecuteReader(connectionString, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的数据阅读器,指定参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名或T-SQL语句</param>
|
|
|
+ /// <param>SqlParamter参数数组(new SqlParameter("@prodid", 24))</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+
|
|
|
+ SqlConnection connection = null;
|
|
|
+ try
|
|
|
+ {
|
|
|
+ connection = new SqlConnection(connectionString);
|
|
|
+ connection.Open();
|
|
|
+ return ExecuteReader(connection, null, commandType, commandText, commandParameters, SqlConnectionOwnership.Internal);
|
|
|
+ }
|
|
|
+ catch
|
|
|
+ {
|
|
|
+ // If we fail to return the SqlDatReader, we need to close the connection ourselves
|
|
|
+ if (connection != null) connection.Close();
|
|
|
+ throw;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的数据阅读器,指定参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(connString, "GetOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的数据阅读器.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名或T-SQL语句</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ return ExecuteReader(connection, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [调用者方式]执行指定数据库连接对象的数据阅读器,指定参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ return ExecuteReader(connection, (SqlTransaction)null, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [调用者方式]执行指定数据库连接对象的数据阅读器,指定参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(conn, "GetOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>T存储过程名</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(SqlConnection connection, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return ExecuteReader(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [调用者方式]执行指定数据库事务的数据阅读器,指定参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ return ExecuteReader(transaction, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [调用者方式]执行指定数据库事务的数据阅读器,指定参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [调用者方式]执行指定数据库事务的数据阅读器,指定参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// SqlDataReader dr = ExecuteReader(trans, "GetOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReader(SqlTransaction transaction, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ return ExecuteReader(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion ExecuteReader数据阅读器
|
|
|
+
|
|
|
+ #region ExecuteScalar 返回结果集中的第一行第一列
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ // 执行参数为空的方法
|
|
|
+ return ExecuteScalar(connectionString, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,指定参数,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+ // 创建并打开数据库连接对象,操作完成释放对象.
|
|
|
+ using (SqlConnection connection = new SqlConnection(connectionString))
|
|
|
+ {
|
|
|
+ connection.Open();
|
|
|
+ // 调用指定数据库连接字符串重载方法.
|
|
|
+ return ExecuteScalar(connection, commandType, commandText, commandParameters);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,指定参数值,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(connString, "GetOrderCount", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
|
|
|
+ // 给存储过程参数赋值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ // 调用重载方法
|
|
|
+ return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ // 执行参数为空的方法
|
|
|
+ return ExecuteScalar(connection, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,指定参数,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+ // 创建SqlCommand命令,并进行预处理
|
|
|
+ SqlCommand cmd = new SqlCommand();
|
|
|
+ bool mustCloseConnection = false;
|
|
|
+ PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
|
|
|
+
|
|
|
+ // 执行SqlCommand命令,并返回结果.
|
|
|
+ object retval = cmd.ExecuteScalar();
|
|
|
+
|
|
|
+ // 清除参数,以便再次使用.
|
|
|
+ cmd.Parameters.Clear();
|
|
|
+ if (mustCloseConnection)
|
|
|
+ connection.Close();
|
|
|
+ return retval;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,指定参数值,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(conn, "GetOrderCount", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(SqlConnection connection, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+ // 给存储过程参数赋值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ // 调用重载方法
|
|
|
+ return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ return ExecuteScalar(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的命令,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ // 执行参数为空的方法
|
|
|
+ return ExecuteScalar(transaction, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的命令,指定参数,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ // 创建SqlCommand命令,并进行预处理
|
|
|
+ SqlCommand cmd = new SqlCommand();
|
|
|
+ bool mustCloseConnection = false;
|
|
|
+ PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
|
|
|
+
|
|
|
+ // 执行SqlCommand命令,并返回结果.
|
|
|
+ object retval = cmd.ExecuteScalar();
|
|
|
+
|
|
|
+ // 清除参数,以便再次使用.
|
|
|
+ cmd.Parameters.Clear();
|
|
|
+ return retval;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的命令,指定参数值,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// int orderCount = (int)ExecuteScalar(trans, "GetOrderCount", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalar(SqlTransaction transaction, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // PPull the parameters for this stored procedure from the parameter cache ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+ // 给存储过程参数赋值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ // 调用重载方法
|
|
|
+ return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ return ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion ExecuteScalar
|
|
|
+
|
|
|
+ #region ExecuteXmlReader XML阅读器
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的SqlCommand命令,并产生一个XmlReader对象做为结果集返回.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句 using "FOR XML AUTO"</param>
|
|
|
+ /// <returns>返回XmlReader结果集对象.</returns>
|
|
|
+ public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ // 执行参数为空的方法
|
|
|
+ return ExecuteXmlReader(connection, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的SqlCommand命令,并产生一个XmlReader对象做为结果集返回,指定参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句 using "FOR XML AUTO"</param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回XmlReader结果集对象.</returns>
|
|
|
+ public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+
|
|
|
+ bool mustCloseConnection = false;
|
|
|
+ // 创建SqlCommand命令,并进行预处理
|
|
|
+ SqlCommand cmd = new SqlCommand();
|
|
|
+ try
|
|
|
+ {
|
|
|
+ PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
|
|
|
+
|
|
|
+ // 执行命令
|
|
|
+ XmlReader retval = cmd.ExecuteXmlReader();
|
|
|
+
|
|
|
+ // 清除参数,以便再次使用.
|
|
|
+ cmd.Parameters.Clear();
|
|
|
+ return retval;
|
|
|
+ }
|
|
|
+ catch
|
|
|
+ {
|
|
|
+ if (mustCloseConnection)
|
|
|
+ connection.Close();
|
|
|
+ throw;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的SqlCommand命令,并产生一个XmlReader对象做为结果集返回,指定参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// XmlReader r = ExecuteXmlReader(conn, "GetOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称 using "FOR XML AUTO"</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回XmlReader结果集对象.</returns>
|
|
|
+ public static XmlReader ExecuteXmlReader(SqlConnection connection, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+ // 给存储过程参数赋值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ // 调用重载方法
|
|
|
+ return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的SqlCommand命令,并产生一个XmlReader对象做为结果集返回.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句 using "FOR XML AUTO"</param>
|
|
|
+ /// <returns>返回XmlReader结果集对象.</returns>
|
|
|
+ public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText)
|
|
|
+ {
|
|
|
+ // 执行参数为空的方法
|
|
|
+ return ExecuteXmlReader(transaction, commandType, commandText, (SqlParameter[])null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的SqlCommand命令,并产生一个XmlReader对象做为结果集返回,指定参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句 using "FOR XML AUTO"</param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ /// <returns>返回XmlReader结果集对象.</returns>
|
|
|
+ public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+
|
|
|
+ // 创建SqlCommand命令,并进行预处理
|
|
|
+ SqlCommand cmd = new SqlCommand();
|
|
|
+ bool mustCloseConnection = false;
|
|
|
+ PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
|
|
|
+
|
|
|
+ // 执行命令
|
|
|
+ XmlReader retval = cmd.ExecuteXmlReader();
|
|
|
+
|
|
|
+ // 清除参数,以便再次使用.
|
|
|
+ cmd.Parameters.Clear();
|
|
|
+ return retval;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的SqlCommand命令,并产生一个XmlReader对象做为结果集返回,指定参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// XmlReader r = ExecuteXmlReader(trans, "GetOrders", 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet.</returns>
|
|
|
+ public static XmlReader ExecuteXmlReader(SqlTransaction transaction, string spName, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+ // 给存储过程参数赋值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ // 调用重载方法
|
|
|
+ return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion ExecuteXmlReader 阅读器结束
|
|
|
+
|
|
|
+ #region FillDataset 填充数据集
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,映射数据表并填充数据集.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)</param>
|
|
|
+ public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+ if (dataSet == null)
|
|
|
+ throw new ArgumentNullException("dataSet");
|
|
|
+
|
|
|
+ // 创建并打开数据库连接对象,操作完成释放对象.
|
|
|
+ using (SqlConnection connection = new SqlConnection(connectionString))
|
|
|
+ {
|
|
|
+ connection.Open();
|
|
|
+ // 调用指定数据库连接字符串重载方法.
|
|
|
+ FillDataset(connection, commandType, commandText, dataSet, tableNames);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,映射数据表并填充数据集.指定命令参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+ if (dataSet == null)
|
|
|
+ throw new ArgumentNullException("dataSet");
|
|
|
+
|
|
|
+ // 创建并打开数据库连接对象,操作完成释放对象.
|
|
|
+ using (SqlConnection connection = new SqlConnection(connectionString))
|
|
|
+ {
|
|
|
+ connection.Open();
|
|
|
+ // 调用指定数据库连接字符串重载方法.
|
|
|
+ FillDataset(connection, commandType, commandText, dataSet, tableNames, commandParameters);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接字符串的命令,映射数据表并填充数据集,指定存储过程参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, 24);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ public static void FillDataset(string connectionString, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0)
|
|
|
+ throw new ArgumentNullException("connectionString");
|
|
|
+ if (dataSet == null)
|
|
|
+ throw new ArgumentNullException("dataSet");
|
|
|
+
|
|
|
+ // 创建并打开数据库连接对象,操作完成释放对象.
|
|
|
+ using (SqlConnection connection = new SqlConnection(connectionString))
|
|
|
+ {
|
|
|
+ connection.Open();
|
|
|
+ // 调用指定数据库连接字符串重载方法.
|
|
|
+ FillDataset(connection, spName, dataSet, tableNames, parameterValues);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,映射数据表并填充数据集.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ public static void FillDataset(SqlConnection connection, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames)
|
|
|
+ {
|
|
|
+ FillDataset(connection, commandType, commandText, dataSet, tableNames, null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,映射数据表并填充数据集,指定参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ public static void FillDataset(SqlConnection connection, CommandType commandType,
|
|
|
+ string commandText, DataSet dataSet, string[] tableNames,
|
|
|
+ params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ FillDataset(connection, null, commandType, commandText, dataSet, tableNames, commandParameters);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库连接对象的命令,映射数据表并填充数据集,指定存储过程参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(conn, "GetOrders", ds, new string[] {"orders"}, 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ public static void FillDataset(SqlConnection connection, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+ if (dataSet == null)
|
|
|
+ throw new ArgumentNullException("dataSet");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+ // 给存储过程参数赋值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ // 调用重载方法
|
|
|
+ FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的命令,映射数据表并填充数据集.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ public static void FillDataset(SqlTransaction transaction, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames)
|
|
|
+ {
|
|
|
+ FillDataset(transaction, commandType, commandText, dataSet, tableNames, null);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的命令,映射数据表并填充数据集,指定参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ public static void FillDataset(SqlTransaction transaction, CommandType commandType,
|
|
|
+ string commandText, DataSet dataSet, string[] tableNames,
|
|
|
+ params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ FillDataset(transaction.Connection, transaction, commandType, commandText, dataSet, tableNames, commandParameters);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定数据库事务的命令,映射数据表并填充数据集,指定存储过程参数值.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 此方法不提供访问存储过程输出参数和返回值参数.
|
|
|
+ ///
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(trans, "GetOrders", ds, new string[]{"orders"}, 24, 36);
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ /// <param>分配给存储过程输入参数的对象数组</param>
|
|
|
+ public static void FillDataset(SqlTransaction transaction, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues)
|
|
|
+ {
|
|
|
+ if (transaction == null)
|
|
|
+ throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null)
|
|
|
+ throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (dataSet == null)
|
|
|
+ throw new ArgumentNullException("dataSet");
|
|
|
+ if (spName == null || spName.Length == 0)
|
|
|
+ throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果有参数值
|
|
|
+ if ((parameterValues != null) && (parameterValues.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+ // 给存储过程参数赋值
|
|
|
+ AssignParameterValues(commandParameters, parameterValues);
|
|
|
+ // 调用重载方法
|
|
|
+ FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ // 没有参数值
|
|
|
+ FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [私有方法][内部调用]执行指定数据库连接对象/事务的命令,映射数据表并填充数据集,DataSet/TableNames/SqlParameters.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// FillDataset(conn, trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>一个有效的连接事务</param>
|
|
|
+ /// <param>命令类型 (存储过程,命令文本或其它)</param>
|
|
|
+ /// <param>存储过程名称或T-SQL语句</param>
|
|
|
+ /// <param>要填充结果集的DataSet实例</param>
|
|
|
+ /// <param>表映射的数据表数组
|
|
|
+ /// 用户定义的表名 (可有是实际的表名.)
|
|
|
+ /// </param>
|
|
|
+ /// <param>分配给命令的SqlParamter参数数组</param>
|
|
|
+ private static void FillDataset(SqlConnection connection, SqlTransaction transaction, CommandType commandType,
|
|
|
+ string commandText, DataSet dataSet, string[] tableNames,
|
|
|
+ params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connection == null)
|
|
|
+ throw new ArgumentNullException("connection");
|
|
|
+ if (dataSet == null)
|
|
|
+ throw new ArgumentNullException("dataSet");
|
|
|
+ // 创建SqlCommand命令,并进行预处理
|
|
|
+ SqlCommand command = new SqlCommand();
|
|
|
+ bool mustCloseConnection = false;
|
|
|
+ PrepareCommand(command, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
|
|
|
+
|
|
|
+ // 执行命令
|
|
|
+ using (SqlDataAdapter dataAdapter = new SqlDataAdapter(command))
|
|
|
+ {
|
|
|
+
|
|
|
+ // 追加表映射
|
|
|
+ if (tableNames != null && tableNames.Length > 0)
|
|
|
+ {
|
|
|
+ string tableName = "Table";
|
|
|
+ for (int index = 0; index < tableNames.Length; index++)
|
|
|
+ {
|
|
|
+ if (tableNames[index] == null || tableNames[index].Length == 0) throw new ArgumentException("The tableNames parameter must contain a list of tables, a value was provided as null or empty string.", "tableNames");
|
|
|
+ dataAdapter.TableMappings.Add(tableName, tableNames[index]);
|
|
|
+ tableName += (index + 1).ToString();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // 填充数据集使用默认表名称
|
|
|
+ dataAdapter.Fill(dataSet);
|
|
|
+ // 清除参数,以便再次使用.
|
|
|
+ command.Parameters.Clear();
|
|
|
+ }
|
|
|
+ if (mustCloseConnection)
|
|
|
+ connection.Close();
|
|
|
+ }
|
|
|
+ #endregion
|
|
|
+
|
|
|
+ #region UpdateDataset 更新数据集
|
|
|
+ /// <summary>
|
|
|
+ /// 执行数据集更新到数据库,指定inserted, updated, or deleted命令.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// UpdateDataset(conn, insertCommand, deleteCommand, updateCommand, dataSet, "Order");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>[追加记录]一个有效的T-SQL语句或存储过程</param>
|
|
|
+ /// <param>[删除记录]一个有效的T-SQL语句或存储过程</param>
|
|
|
+ /// <param>[更新记录]一个有效的T-SQL语句或存储过程</param>
|
|
|
+ /// <param>要更新到数据库的DataSet</param>
|
|
|
+ /// <param>要更新到数据库的DataTable</param>
|
|
|
+ public static void UpdateDataset(SqlCommand insertCommand, SqlCommand deleteCommand, SqlCommand updateCommand, DataSet dataSet, string tableName)
|
|
|
+ {
|
|
|
+ if (insertCommand == null) throw new ArgumentNullException("insertCommand");
|
|
|
+ if (deleteCommand == null) throw new ArgumentNullException("deleteCommand");
|
|
|
+ if (updateCommand == null) throw new ArgumentNullException("updateCommand");
|
|
|
+ if (tableName == null || tableName.Length == 0) throw new ArgumentNullException("tableName");
|
|
|
+ // 创建SqlDataAdapter,当操作完成后释放.
|
|
|
+ using (SqlDataAdapter dataAdapter = new SqlDataAdapter())
|
|
|
+ {
|
|
|
+ // 设置数据适配器命令
|
|
|
+ dataAdapter.UpdateCommand = updateCommand;
|
|
|
+ dataAdapter.InsertCommand = insertCommand;
|
|
|
+ dataAdapter.DeleteCommand = deleteCommand;
|
|
|
+ // 更新数据集改变到数据库
|
|
|
+ dataAdapter.Update(dataSet, tableName);
|
|
|
+ // 提交所有改变到数据集.
|
|
|
+ dataSet.AcceptChanges();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion
|
|
|
+
|
|
|
+ #region CreateCommand 创建一条SqlCommand命令
|
|
|
+ /// <summary>
|
|
|
+ /// 创建SqlCommand命令,指定数据库连接对象,存储过程名和参数.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 示例:
|
|
|
+ /// SqlCommand command = CreateCommand(conn, "AddCustomer", "CustomerID", "CustomerName");
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>源表的列名称数组</param>
|
|
|
+ /// <returns>返回SqlCommand命令</returns>
|
|
|
+ public static SqlCommand CreateCommand(SqlConnection connection, string spName, params string[] sourceColumns)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 创建命令
|
|
|
+ SqlCommand cmd = new SqlCommand(spName, connection);
|
|
|
+ cmd.CommandType = CommandType.StoredProcedure;
|
|
|
+ // 如果有参数值
|
|
|
+ if ((sourceColumns != null) && (sourceColumns.Length > 0))
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+ // 将源表的列到映射到DataSet命令中.
|
|
|
+ for (int index = 0; index < sourceColumns.Length; index++)
|
|
|
+ commandParameters[index].SourceColumn = sourceColumns[index];
|
|
|
+ // Attach the discovered parameters to the SqlCommand object
|
|
|
+ AttachParameters(cmd, commandParameters);
|
|
|
+ }
|
|
|
+ return cmd;
|
|
|
+ }
|
|
|
+ #endregion
|
|
|
+
|
|
|
+ #region ExecuteNonQueryTypedParams 类型化参数(DataRow)
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接字符串的存储过程,使用DataRow做为参数值,返回受影响的行数.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回影响的行数</returns>
|
|
|
+ public static int ExecuteNonQueryTypedParams(String connectionString, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接对象的存储过程,使用DataRow做为参数值,返回受影响的行数.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回影响的行数</returns>
|
|
|
+ public static int ExecuteNonQueryTypedParams(SqlConnection connection, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库事物的存储过程,使用DataRow做为参数值,返回受影响的行数.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的连接事务 object</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回影响的行数</returns>
|
|
|
+ public static int ExecuteNonQueryTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (transaction == null) throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // Sf the row has values, the store procedure parameters must be initialized
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion
|
|
|
+
|
|
|
+ #region ExecuteDatasetTypedParams 类型化参数(DataRow)
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接字符串的存储过程,使用DataRow做为参数值,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet.</returns>
|
|
|
+ public static DataSet ExecuteDatasetTypedParams(string connectionString, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ //如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接对象的存储过程,使用DataRow做为参数值,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet.</returns>
|
|
|
+ ///
|
|
|
+ public static DataSet ExecuteDatasetTypedParams(SqlConnection connection, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库事务的存储过程,使用DataRow做为参数值,返回DataSet.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的连接事务 object</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回一个包含结果集的DataSet.</returns>
|
|
|
+ public static DataSet ExecuteDatasetTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (transaction == null) throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion
|
|
|
+
|
|
|
+ #region ExecuteReaderTypedParams 类型化参数(DataRow)
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接字符串的存储过程,使用DataRow做为参数值,返回DataReader.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReaderTypedParams(String connectionString, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接对象的存储过程,使用DataRow做为参数值,返回DataReader.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库事物的存储过程,使用DataRow做为参数值,返回DataReader.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的连接事务 object</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回包含结果集的SqlDataReader</returns>
|
|
|
+ public static SqlDataReader ExecuteReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (transaction == null) throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion
|
|
|
+
|
|
|
+ #region ExecuteScalarTypedParams 类型化参数(DataRow)
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接字符串的存储过程,使用DataRow做为参数值,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalarTypedParams(String connectionString, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接对象的存储过程,使用DataRow做为参数值,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalarTypedParams(SqlConnection connection, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库事务的存储过程,使用DataRow做为参数值,返回结果集中的第一行第一列.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的连接事务 object</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回结果集中的第一行第一列</returns>
|
|
|
+ public static object ExecuteScalarTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (transaction == null) throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion
|
|
|
+
|
|
|
+ #region ExecuteXmlReaderTypedParams 类型化参数(DataRow)
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库连接对象的存储过程,使用DataRow做为参数值,返回XmlReader类型的结果集.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回XmlReader结果集对象.</returns>
|
|
|
+ public static XmlReader ExecuteXmlReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 执行指定连接数据库事务的存储过程,使用DataRow做为参数值,返回XmlReader类型的结果集.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的连接事务 object</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>使用DataRow作为参数值</param>
|
|
|
+ /// <returns>返回XmlReader结果集对象.</returns>
|
|
|
+ public static XmlReader ExecuteXmlReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
|
|
|
+ {
|
|
|
+ if (transaction == null) throw new ArgumentNullException("transaction");
|
|
|
+ if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ // 如果row有值,存储过程必须初始化.
|
|
|
+ if (dataRow != null && dataRow.ItemArray.Length > 0)
|
|
|
+ {
|
|
|
+ // 从缓存中加载存储过程参数,如果缓存中不存在则从数据库中检索参数信息并加载到缓存中. ()
|
|
|
+ SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
|
|
|
+
|
|
|
+ // 分配参数值
|
|
|
+ AssignParameterValues(commandParameters, dataRow);
|
|
|
+
|
|
|
+ return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// SqlHelperParameterCache提供缓存存储过程参数,并能够在运行时从存储过程中探索参数.
|
|
|
+ /// </summary>
|
|
|
+ public sealed class SqlHelperParameterCache
|
|
|
+ {
|
|
|
+ #region 私有方法,字段,构造函数
|
|
|
+ // 私有构造函数,妨止类被实例化.
|
|
|
+ private SqlHelperParameterCache() { }
|
|
|
+ // 这个方法要注意
|
|
|
+ private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable());
|
|
|
+ /// <summary>
|
|
|
+ /// 探索运行时的存储过程,返回SqlParameter参数数组.
|
|
|
+ /// 初始化参数值为 DBNull.Value.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接</param>
|
|
|
+ /// <param>存储过程名称</param>
|
|
|
+ /// <param>是否包含返回值参数</param>
|
|
|
+ /// <returns>返回SqlParameter参数数组</returns>
|
|
|
+ private static SqlParameter[] DiscoverSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ SqlCommand cmd = new SqlCommand(spName, connection);
|
|
|
+ cmd.CommandType = CommandType.StoredProcedure;
|
|
|
+ connection.Open();
|
|
|
+ // 检索cmd指定的存储过程的参数信息,并填充到cmd的Parameters参数集中.
|
|
|
+ SqlCommandBuilder.DeriveParameters(cmd);
|
|
|
+ connection.Close();
|
|
|
+ // 如果不包含返回值参数,将参数集中的每一个参数删除.
|
|
|
+ if (!includeReturnValueParameter)
|
|
|
+ {
|
|
|
+ cmd.Parameters.RemoveAt(0);
|
|
|
+ }
|
|
|
+
|
|
|
+ // 创建参数数组
|
|
|
+ SqlParameter[] discoveredParameters = new SqlParameter[cmd.Parameters.Count];
|
|
|
+ // 将cmd的Parameters参数集复制到discoveredParameters数组.
|
|
|
+ cmd.Parameters.CopyTo(discoveredParameters, 0);
|
|
|
+ // 初始化参数值为 DBNull.Value.
|
|
|
+ foreach (SqlParameter discoveredParameter in discoveredParameters)
|
|
|
+ {
|
|
|
+ discoveredParameter.Value = DBNull.Value;
|
|
|
+ }
|
|
|
+ return discoveredParameters;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// SqlParameter参数数组的深层拷贝.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>原始参数数组</param>
|
|
|
+ /// <returns>返回一个同样的参数数组</returns>
|
|
|
+ private static SqlParameter[] CloneParameters(SqlParameter[] originalParameters)
|
|
|
+ {
|
|
|
+ SqlParameter[] clonedParameters = new SqlParameter[originalParameters.Length];
|
|
|
+ for (int i = 0, j = originalParameters.Length; i < j; i++)
|
|
|
+ {
|
|
|
+ clonedParameters[i] = (SqlParameter)((ICloneable)originalParameters[i]).Clone();
|
|
|
+ }
|
|
|
+ return clonedParameters;
|
|
|
+ }
|
|
|
+ #endregion 私有方法,字段,构造函数结束
|
|
|
+
|
|
|
+ #region 缓存方法
|
|
|
+ /// <summary>
|
|
|
+ /// 追加参数数组到缓存.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接字符串</param>
|
|
|
+ /// <param>存储过程名或SQL语句</param>
|
|
|
+ /// <param>要缓存的参数数组</param>
|
|
|
+ public static void CacheParameterSet(string connectionString, string commandText, params SqlParameter[] commandParameters)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
|
|
|
+ if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");
|
|
|
+ string hashKey = connectionString + ":" + commandText;
|
|
|
+ paramCache[hashKey] = commandParameters;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 从缓存中获取参数数组.
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接字符</param>
|
|
|
+ /// <param>存储过程名或SQL语句</param>
|
|
|
+ /// <returns>参数数组</returns>
|
|
|
+ public static SqlParameter[] GetCachedParameterSet(string connectionString, string commandText)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
|
|
|
+ if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");
|
|
|
+ string hashKey = connectionString + ":" + commandText;
|
|
|
+ SqlParameter[] cachedParameters = paramCache[hashKey] as SqlParameter[];
|
|
|
+ if (cachedParameters == null)
|
|
|
+ {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ return CloneParameters(cachedParameters);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ #endregion 缓存方法结束
|
|
|
+
|
|
|
+ #region 检索指定的存储过程的参数集
|
|
|
+ /// <summary>
|
|
|
+ /// 返回指定的存储过程的参数集
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 这个方法将查询数据库,并将信息存储到缓存.
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <returns>返回SqlParameter参数数组</returns>
|
|
|
+ public static SqlParameter[] GetSpParameterSet(string connectionString, string spName)
|
|
|
+ {
|
|
|
+ return GetSpParameterSet(connectionString, spName, false);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 返回指定的存储过程的参数集
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 这个方法将查询数据库,并将信息存储到缓存.
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符.</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <param>是否包含返回值参数</param>
|
|
|
+ /// <returns>返回SqlParameter参数数组</returns>
|
|
|
+ public static SqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
|
|
|
+ {
|
|
|
+ if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ using (SqlConnection connection = new SqlConnection(connectionString))
|
|
|
+ {
|
|
|
+ return GetSpParameterSetInternal(connection, spName, includeReturnValueParameter);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [内部]返回指定的存储过程的参数集(使用连接对象).
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 这个方法将查询数据库,并将信息存储到缓存.
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接字符</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <returns>返回SqlParameter参数数组</returns>
|
|
|
+ internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName)
|
|
|
+ {
|
|
|
+ return GetSpParameterSet(connection, spName, false);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [内部]返回指定的存储过程的参数集(使用连接对象)
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// 这个方法将查询数据库,并将信息存储到缓存.
|
|
|
+ /// </remarks>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <param>
|
|
|
+ /// 是否包含返回值参数
|
|
|
+ /// </param>
|
|
|
+ /// <returns>返回SqlParameter参数数组</returns>
|
|
|
+ internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ using (SqlConnection clonedConnection = (SqlConnection)((ICloneable)connection).Clone())
|
|
|
+ {
|
|
|
+ return GetSpParameterSetInternal(clonedConnection, spName, includeReturnValueParameter);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// [私有]返回指定的存储过程的参数集(使用连接对象)
|
|
|
+ /// </summary>
|
|
|
+ /// <param>一个有效的数据库连接对象</param>
|
|
|
+ /// <param>存储过程名</param>
|
|
|
+ /// <param>是否包含返回值参数</param>
|
|
|
+ /// <returns>返回SqlParameter参数数组</returns>
|
|
|
+ private static SqlParameter[] GetSpParameterSetInternal(SqlConnection connection, string spName, bool includeReturnValueParameter)
|
|
|
+ {
|
|
|
+ if (connection == null) throw new ArgumentNullException("connection");
|
|
|
+ if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
|
|
|
+ string hashKey = connection.ConnectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : "");
|
|
|
+ SqlParameter[] cachedParameters;
|
|
|
+
|
|
|
+ cachedParameters = paramCache[hashKey] as SqlParameter[];
|
|
|
+ if (cachedParameters == null)
|
|
|
+ {
|
|
|
+ SqlParameter[] spParameters = DiscoverSpParameterSet(connection, spName, includeReturnValueParameter);
|
|
|
+ paramCache[hashKey] = spParameters;
|
|
|
+ cachedParameters = spParameters;
|
|
|
+ }
|
|
|
+
|
|
|
+ return CloneParameters(cachedParameters);
|
|
|
+ }
|
|
|
+
|
|
|
+ #endregion 参数集检索结束
|
|
|
+ }
|
|
|
+}
|
