using System;
using System.Collections;
using System.Collections.Specialized;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Data.Common;
using System.Collections.Generic;
namespace LYFZ.Helper
{
/// <summary>
/// 数据访问抽象基础类
/// </summary>
public abstract class SQLHelper
{
public SQLHelper()
{
}
#region 公用方法
/// <summary>
/// 检查数据库连接是否正常
/// </summary>
/// <param name="connString"></param>
/// <returns></returns>
public static bool ExistsSqlConn(string connString)
{
bool bl = true;
using (SqlConnection connection = new SqlConnection(connString))
{
try
{
if (connection.State != ConnectionState.Open)
{
connection.Open();
connection.Close();
}
else
{
connection.Close();
}
}
catch
{
bl = false;
}
}
return bl;
}
/// <summary>
/// 判断是否存在某表的某个字段
/// </summary>
/// <param name="tableName">表名称</param>
/// <param name="columnName">列名称</param>
/// <returns>是否存在</returns>
public static bool ColumnExists(string tableName, string columnName, string iGetConn)
{
string sql = "select count(1) from syscolumns where [id]=object_id('" + tableName + "') and [name]='" + columnName + "'";
object res = GetSingle(sql,iGetConn);
if (res == null)
{
return false;
}
return Convert.ToInt32(res) > 0;
}
public static int GetMaxID(string FieldName, string TableName, string iGetConn)
{
string strsql = "select max(" + FieldName + ")+1 from " + TableName;
object obj = GetSingle(strsql,iGetConn);
if (obj == null)
{
return 1;
}
else
{
return int.Parse(obj.ToString());
}
}
public static bool Exists(string strSql, string iGetConn)
{
object obj = GetSingle(strSql,iGetConn);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
/// <summary>
/// 表是否存在
/// </summary>
/// <param name="TableName"></param>
/// <returns></returns>
public static bool TabExists(string TableName, string iGetConn)
{
string strsql = "select count(*) from sysobjects where id = object_id(N'[" + TableName + "]') and OBJECTPROPERTY(id, N'IsUserTable') = 1";
//string strsql = "SELECT count(*) FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[" + TableName + "]') AND type in (N'U')";
object obj = GetSingle(strsql,iGetConn);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
/// <summary>
/// 视图是否存在
/// </summary>
/// <param name="TableName"></param>
/// <returns></returns>
public static bool ViewsExists(string ViewsName, string iGetConn)
{
try
{
string strsql = "SELECT count([object_id]) as objCount FROM sys.views WHERE object_id = OBJECT_ID(N'[dbo].[" + ViewsName + "]')";
//string strsql = "SELECT count(*) FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[" + TableName + "]') AND type in (N'U')";
object obj = GetSingle(strsql,iGetConn);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
catch { return false; }
}
public static bool Exists(string strSql, string iGetConn, params SqlParameter[] cmdParms)
{
object obj = GetSingle(strSql,iGetConn, cmdParms);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
#endregion
#region 执行简单SQL语句
/// <summary>
/// 执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString, string iGetConn)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
public static int ExecuteSqlByTime(string SQLString, int Times, string iGetConn)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = Times;
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">多条SQL语句</param>
public static int ExecuteSqlTran(List<String> SQLStringList, string iGetConn)
{
using (SqlConnection conn = new SqlConnection(iGetConn))
{
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
SqlTransaction tx = conn.BeginTransaction();
cmd.Transaction = tx;
try
{
int count = 0;
for (int n = 0; n < SQLStringList.Count; n++)
{
string strsql = SQLStringList[n];
if (strsql.Trim().Length > 1)
{
cmd.CommandText = strsql;
count += cmd.ExecuteNonQuery();
}
}
tx.Commit();
return count;
}
catch
{
tx.Rollback();
return 0;
}
}
}
/// <summary>
/// 执行带一个存储过程参数的的SQL语句。
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString, string content, string iGetConn)
{
System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
myParameter.Value = content;
return ExecuteSql(SQLString,iGetConn, new System.Data.SqlClient.SqlParameter[] { myParameter });
}
/// <summary>
/// 执行带一个存储过程参数的的SQL语句。
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
/// <returns>影响的记录数</returns>
public static object ExecuteSqlGet(string SQLString, string content, string iGetConn)
{
System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
myParameter.Value = content;
return GetSingle(SQLString,iGetConn, new System.Data.SqlClient.SqlParameter[] { myParameter });
}
/// <summary>
/// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
/// </summary>
/// <param name="strSQL">SQL语句</param>
/// <param name="fs">图像字节,数据库的字段类型为image的情况</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSqlInsertImg(string strSQL, byte[] fs, string iGetConn)
{
System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@fs", SqlDbType.Image);
myParameter.Value = fs;
return ExecuteSql(strSQL,iGetConn, new System.Data.SqlClient.SqlParameter[] { myParameter });
}
/// <summary>
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// </summary>
/// <param name="SQLString">计算查询结果语句</param>
/// <returns>查询结果（object）</returns>
public static object GetSingle(string SQLString,string connString)
{
using (SqlConnection connection = new SqlConnection(connString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
object obj = cmd.ExecuteScalar();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
public static object GetSingle(string SQLString, int Times, string iGetConn)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = Times;
object obj = cmd.ExecuteScalar();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
///// <summary>
///// 执行查询语句，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
///// </summary>
///// <param name="strSQL">查询语句</param>
///// <returns>SqlDataReader</returns>
//public static SqlDataReader ExecuteReader(string strSQL)
//{
// SqlConnection connection = new SqlConnection(GetConnectionString.iGetConn);
// SqlCommand cmd = new SqlCommand(strSQL, connection);
// try
// {
// connection.Open();
// SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
// return myReader;
// }
// catch (System.Data.SqlClient.SqlException e)
// {
// throw e;
// }
//}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString, string iGetConn)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
DataSet ds = new DataSet();
try
{
connection.Open();
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
public static DataSet Query(string SQLString, int Times, string iGetConn)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
DataSet ds = new DataSet();
try
{
connection.Open();
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
command.SelectCommand.CommandTimeout = Times;
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
#endregion
#region 执行带参数的SQL语句
public static string dataBaseServer="127.0.0.1";
public static string baseUser="sa";
public static string basePass="1234";
public static int port=0;
/// <summary>
/// 获取Master数据库连接串
/// </summary>
/// <returns></returns>
public static string GetMasterConnString()
{
string vDataBaseServer = dataBaseServer;
if (port != 0)
{
vDataBaseServer = vDataBaseServer + "," + port;
}
string connString = "Data Source=" + vDataBaseServer + ";Initial Catalog=master;User ID=" + baseUser + ";Password=" + basePass+ "";
return connString;
}
static string _WindowsDataBaseServer = "127.0.0.1";
/// <summary>
/// windows 身份验证连接数据库时的服务器地址 如果有端口号 请加上端口号
/// </summary>
public static string WindowsDataBaseServer
{
get { return SQLHelper._WindowsDataBaseServer; }
set { SQLHelper._WindowsDataBaseServer = value; }
}
/// <summary>
/// 获取Master数据库的windows 身份验证连接串
/// </summary>
/// <returns></returns>
public static string GetWindowsMasterConnString()
{
string vDataBaseServer = WindowsDataBaseServer;
if (port != 0)
{
vDataBaseServer = vDataBaseServer + "," + port;
}
return "server=" + vDataBaseServer + ";database=master;Trusted_Connection=SSPI";
}
/// <summary>
/// 数据库用户管理
/// </summary>
/// <param name="userName">用户名</param>
/// <param name="isDisable">是否禁用 true 为禁用 false 为启用</param>
/// <returns></returns>
public static string DBUserManagement(string userName = "sa", bool isDisable = true)
{
string ret = "操作失败";
try
{
if (isDisable)
{
ExecuteSqlWindowsToMaster("ALTER LOGIN [" + userName + "] DISABLE", null);
ret = "用户禁用成功";
}
else
{
ExecuteSqlWindowsToMaster("ALTER LOGIN [" + userName + "] ENABLE", null);
ret = "用户启用成功";
}
}
catch (System.Data.SqlClient.SqlException e)
{
ret = "操作失败,原因：" + e.Message;
}
return ret;
}
/// <summary>
/// 创建数据库登录用户
/// </summary>
/// <param name="userName">用户名</param>
/// <param name="password">密码</param>
/// <returns></returns>
public static string CreateDBUser(string userName, string password)
{
string ret = "创建成功";
try
{
System.Text.StringBuilder RestoreSql = new System.Text.StringBuilder();
RestoreSql.Append("IF EXISTS (SELECT * FROM sys.server_principals WHERE name = N'" + userName + "')\r\n");
RestoreSql.Append("DROP LOGIN [" + userName + "]\r\n");
RestoreSql.Append("CREATE LOGIN [" + userName + "] WITH PASSWORD=N'" + password + "', DEFAULT_DATABASE=[master], CHECK_EXPIRATION=OFF, CHECK_POLICY=ON\r\n");
RestoreSql.Append("EXEC master..sp_addsrvrolemember @loginame = N'" + userName + "', @rolename = N'bulkadmin'\r\n");
RestoreSql.Append("EXEC master..sp_addsrvrolemember @loginame = N'" + userName + "', @rolename = N'dbcreator'\r\n");
RestoreSql.Append("EXEC master..sp_addsrvrolemember @loginame = N'" + userName + "', @rolename = N'diskadmin'\r\n");
RestoreSql.Append("EXEC master..sp_addsrvrolemember @loginame = N'" + userName + "', @rolename = N'processadmin'\r\n");
RestoreSql.Append("EXEC master..sp_addsrvrolemember @loginame = N'" + userName + "', @rolename = N'securityadmin'\r\n");
RestoreSql.Append("EXEC master..sp_addsrvrolemember @loginame = N'" + userName + "', @rolename = N'serveradmin'\r\n");
RestoreSql.Append("EXEC master..sp_addsrvrolemember @loginame = N'" + userName + "', @rolename = N'setupadmin'\r\n");
RestoreSql.Append("EXEC master..sp_addsrvrolemember @loginame = N'" + userName + "', @rolename = N'sysadmin'\r\n");
ExecuteSqlWindowsToMaster(RestoreSql.ToString(),null);
}
catch (System.Data.SqlClient.SqlException e)
{
ret = "用户创建失败,原因："+e.Message;
}
return ret;
}
/// <summary>
/// 删除数据库登录用户
/// </summary>
/// <param name="userName">用户名</param>
/// <returns></returns>
public static string DeleteDBUser(string userName)
{
string ret = "删除成功";
try
{
System.Text.StringBuilder RestoreSql = new System.Text.StringBuilder();
RestoreSql.Append("IF EXISTS (SELECT * FROM sys.server_principals WHERE name = N'" + userName + "')\r\n");
RestoreSql.Append("ALTER LOGIN [" + userName + "] DISABLE\r\n");
RestoreSql.Append("IF EXISTS (SELECT * FROM sys.server_principals WHERE name = N'" + userName + "')\r\n");
RestoreSql.Append("DROP LOGIN [" + userName + "]\r\n");
ExecuteSqlWindowsToMaster(RestoreSql.ToString(), null);
}
catch (System.Data.SqlClient.SqlException e)
{
ret = "用户删除失败,原因：" + e.Message;
}
return ret;
}
/// <summary>
/// 获取数据库登录用户状态
/// </summary>
/// <param name="userName">用户名</param>
/// <returns>返回 true 为启用 false 为禁用</returns>
public static bool GetDBUserStatus(string userName="sa")
{
string connString = GetWindowsMasterConnString();
using (SqlConnection connection = new SqlConnection(connString))
{
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, "SELECT is_disabled FROM sys.server_principals WHERE name ='" + userName + "'", null);
object obj = cmd.ExecuteScalar();
cmd.Parameters.Clear();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return false;
}
else
{
return !Convert.ToBoolean(obj);
}
}
catch
{
return false;
}
}
}
}
/// <summary>
/// windows 身份验证连接Master系统数据库，并执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSqlWindowsToMaster(string SQLString, params System.Data.SqlClient.SqlParameter[] cmdParms)
{
string connString = GetWindowsMasterConnString();
return ExecuteSql(SQLString, connString, cmdParms);
}
/// <summary>
/// 检查数据库是否存在
/// </summary>
/// <param name="databaseName">数据库名</param>
/// <returns></returns>
public static bool IsDatabaseExists(string databaseName)
{
string dbFilePath="";
return IsDatabaseExists(databaseName, out dbFilePath);
}
/// <summary>
/// 检查数据库是否存在
/// </summary>
/// <param name="databaseName">数据库名</param>
/// <param name="dbFilePath">返数据库文件所在完全路径</param>
/// <returns></returns>
public static bool IsDatabaseExists(string databaseName,out string dbFilePath)
{
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
parameterlist.Add(new System.Data.SqlClient.SqlParameter("@databaseName", databaseName));
string sql = "select dbid,name,filename From sysdatabases WHERE NAME=@databaseName";
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
// System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
dbFilePath = "";
try
{
DataSet ds = LYFZ.Helper.SQLHelper.MasterQuery(sql, parameters);
if (ds.Tables[0].Rows.Count > 0)
{
dbFilePath = ds.Tables[0].Rows[0]["filename"].ToString();
return true;
}
else { return false; }
}
catch
{
return false;
}
}
/// <summary>
/// 强制断开数据库连接
/// </summary>
/// <param name="databaseName"></param>
/// <returns></returns>
public static bool ForcedDisconnect(string databaseName)
{
//LYFZ.Helper.GetConnectionString conn = new Helper.GetConnectionString();
//conn.GetConnInfo();
System.Text.StringBuilder RestoreSql = new System.Text.StringBuilder();
RestoreSql.Append("/* 结束所有对当前数据库的连接 */\r\n");
RestoreSql.Append("if exists(select 1 from sys.sysprocesses where dbid=db_id(@databaseName)) begin\r\n");
RestoreSql.Append("declare #cs_spid cursor -- 声明游标\r\n");
RestoreSql.Append("for\r\n");
RestoreSql.Append("select #cs_spid=convert(varchar,spid) from sys.sysprocesses where dbid=db_id(@databaseName)\r\n");
RestoreSql.Append("open #cs_spid\r\n");
RestoreSql.Append("declare @spid varchar(20)\r\n");
RestoreSql.Append("fetch next from #cs_spid into @spid -- 赋值并前进到下一条\r\n");
RestoreSql.Append("while(@@fetch_status=0) begin -- 在fetch失败前执行\r\n");
RestoreSql.Append("exec ('kill '+@spid) -- 结束对操作库的连接(exec执行SQL语句1)\r\n");
RestoreSql.Append("fetch next from #cs_spid into @spid\r\n");
RestoreSql.Append("end\r\n");
RestoreSql.Append("close #cs_spid\r\n");
RestoreSql.Append("deallocate #cs_spid -- 释放游标\r\n");
RestoreSql.Append("end");
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
parameterlist.Add(new System.Data.SqlClient.SqlParameter("@databaseName", databaseName));
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
try
{
LYFZ.Helper.SQLHelper.ExecuteSqlToMaster(RestoreSql.ToString(), parameters);
return true;
}
catch
{
return false;
}
}
/// <summary>
/// 分离数据库
/// </summary>
/// <param name="databaseName"></param>
/// <returns></returns>
public static bool DetachDatabase(string databaseName)
{
bool bl = false;
if (IsDatabaseExists(databaseName))
{
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
parameterlist.Add(new System.Data.SqlClient.SqlParameter("@databaseName", databaseName));
string sql = "EXEC master.dbo.sp_detach_db @dbname = @databaseName";
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
try
{
LYFZ.Helper.SQLHelper.ForcedDisconnect(databaseName);
LYFZ.Helper.SQLHelper.ExecuteSqlToMaster(sql.ToString(), parameters);
if (!IsDatabaseExists(databaseName))
{
bl = true;
}
else
{
bl = false;
}
}
catch
{
bl = false;
}
}
return bl;
}
/// <summary>
///创建数据库用户
/// </summary>
/// <param name="userName"></param>
/// <param name="password"></param>
/// <param name="databaseName"></param>
/// <returns></returns>
public static bool CreateDataBaseUser(string userName,string password,string databaseName,ref string msg)
{
bool bl = false;
if (IsDatabaseExists(databaseName))
{
// HPSocketCS.Extended.SystemFileLogs.WriteLogs("“" + userName + "”“" + password + "”“" + databaseName + "”开始创建数据库用户...");
System.Text.StringBuilder sql = new System.Text.StringBuilder();
sql.Append(String.Format("IF EXISTS (SELECT * FROM sys.server_principals WHERE name = N'{0}')\r\n", userName));
sql.Append(String.Format("DROP LOGIN [{0}]\r\n", userName));
sql.Append(String.Format("CREATE LOGIN [{0}] WITH PASSWORD=N'{1}', DEFAULT_DATABASE=[{2}], CHECK_EXPIRATION=OFF, CHECK_POLICY=ON\r\n", userName, password, databaseName));
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
try
{
// HPSocketCS.Extended.SystemFileLogs.WriteLogs("创建数据库用户SQL：" + sql);
LYFZ.Helper.SQLHelper.ExecuteSqlToMaster(sql.ToString(), parameters);
if (IsDataBaseUserExists(userName))
{
// HPSocketCS.Extended.SystemFileLogs.WriteLogs("创建数据库用户OK：");
bl = true;
}
else
{
bl = false;
// HPSocketCS.Extended.SystemFileLogs.WriteLogs("创建数据库用户false：");
}
}
catch (Exception ex)
{
msg = ex.Message;
HPSocketCS.Extended.SystemFileLogs.WriteLogs("创建数据库用户出错：" + msg);
bl = false;
}
}
else {
msg = "没有找到名为“" + databaseName + "”的数据库";
HPSocketCS.Extended.SystemFileLogs.WriteLogs("创建数据库用户失败" + msg);
}
return bl;
}
/// <summary>
/// 检查数据库用户是否存在
/// </summary>
/// <param name="userName"></param>
/// <returns></returns>
public static bool IsDataBaseUserExists(string userName)
{
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
string sql = String.Format("SELECT * FROM sys.server_principals WHERE name = N'{0}'", userName);
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
try
{
DataSet ds = LYFZ.Helper.SQLHelper.MasterQuery(sql, parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return true;
}
else
{
return false;
}
}
catch
{
return false;
}
}
/// <summary>
/// 设置数据库用户权限
/// </summary>
/// <param name="userName"></param>
/// <param name="databaseName"></param>
/// <returns></returns>
public static bool SetDataBaseUserPermissions(string userName, string databaseName,ref string msg)
{
bool bl = false;
if (IsDatabaseExists(databaseName) && IsDataBaseUserExists(userName))
{
System.Text.StringBuilder sql = new System.Text.StringBuilder();
sql.Append(String.Format("USE [{0}]\r\n", databaseName));
sql.Append(String.Format("IF EXISTS (SELECT * FROM sys.database_principals WHERE name = N'{0}')\r\n", userName));
sql.Append(String.Format("DROP USER [{0}]\r\n", userName));
sql.Append(String.Format("CREATE USER [{0}] FOR LOGIN [{0}] WITH DEFAULT_SCHEMA=[dbo]\r\n", userName));
sql.Append(String.Format("EXEC sp_addrolemember N'db_backupoperator', N'{0}'\r\n", userName));
sql.Append(String.Format("EXEC sp_addrolemember N'db_datareader', N'{0}'\r\n", userName));
sql.Append(String.Format("EXEC sp_addrolemember N'db_datawriter', N'{0}'\r\n", userName));
sql.Append(String.Format("EXEC sp_addrolemember N'db_ddladmin', N'{0}'\r\n", userName));
sql.Append(String.Format("EXEC sp_addrolemember N'db_owner', N'{0}'\r\n", userName));
sql.Append(String.Format("EXEC sp_addrolemember N'db_securityadmin', N'{0}'\r\n", userName));
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
try
{
LYFZ.Helper.SQLHelper.ExecuteSqlToMaster(sql.ToString(), parameters);
bl = true;
}
catch(Exception ex)
{
msg = ex.Message;
bl = false;
}
}
return bl;
}
/// <summary>
/// 附加数据库
/// </summary>
/// <param name="databaseFilePath"></param>
/// <param name="databaseLogsFilePath"></param>
/// <param name="databaseName"></param>
/// <returns></returns>
public static bool AddDatabase(string databaseFilePath, string databaseLogsFilePath, string databaseName)
{
bool bl = false;
if (!IsDatabaseExists(databaseName))
{
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
string sql = "CREATE DATABASE [" + databaseName + "] ON ( FILENAME ='" + databaseFilePath + "' ),( FILENAME ='" + databaseLogsFilePath + "' ) FOR ATTACH";
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
try
{
LYFZ.Helper.SQLHelper.ExecuteSqlToMaster(sql.ToString(), parameters);
if (IsDatabaseExists(databaseName))
{
DatabaseLogRecoveryMode(databaseName);
bl = true;
}
else
{
bl = false;
}
}
catch
{
bl = false;
}
}
else
{
bl = true;
}
return bl;
}
/// <summary>
/// 数据库日志恢复模式
/// </summary>
/// <param name="databaseName"></param>
/// <param name="mode"></param>
public static void DatabaseLogRecoveryMode(string databaseName, string mode = "SIMPLE")
{
if (IsDatabaseExists(databaseName))
{
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
parameterlist.Add(new System.Data.SqlClient.SqlParameter("@databaseName", databaseName));
parameterlist.Add(new System.Data.SqlClient.SqlParameter("@SIMPLE", databaseName));
string sql = "ALTER DATABASE @databaseName SET RECOVERY @SIMPLE ;";
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
try
{
LYFZ.Helper.SQLHelper.ExecuteSqlToMaster(sql.ToString(), parameters);
}
catch
{
}
}
}
/// <summary>
/// 连接Master系统数据库，并执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSqlToMaster(string SQLString, params System.Data.SqlClient.SqlParameter[] cmdParms)
{
string connString =GetWindowsMasterConnString();
return ExecuteSql(SQLString, connString, cmdParms);
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">多条SQL语句</param>
/// <param name="msg"></param>
/// <param name="backgroundWorker"></param>
/// <param name="times"></param>
/// <returns></returns>
public static int ExecuteSqlTran(List<string> SQLStringList, string iGetConn, ref string msg, System.ComponentModel.BackgroundWorker backgroundWorker = null, int times = -1)
{
//总计数器
float sumCount = SQLStringList.Count;
//当前计数器
int currentCount = 0;
using (SqlConnection conn = new SqlConnection(iGetConn))
{
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
SqlTransaction tx = conn.BeginTransaction();
cmd.Transaction = tx;
if (times > 0)
{
cmd.CommandTimeout = times;
}
try
{
int count = 0;
if (SQLStringList.Count > 0)
{
for (int n = 0; n < SQLStringList.Count; n++)
{
currentCount++;
string strsql = SQLStringList[n];
if (strsql.Trim().Length > 1)
{
cmd.CommandText = strsql;
count += cmd.ExecuteNonQuery();
}
if (backgroundWorker != null)
{
try
{
int currentProgres = Convert.ToInt32(1000 / sumCount * currentCount);
backgroundWorker.ReportProgress(currentProgres);
}
catch { }
}
}
tx.Commit();
msg = "成功!";
return SQLStringList.Count;
}
else
{
msg = "失败，错误原因：脚本内容为空！";
return 0;
}
}
catch (System.Data.SqlClient.SqlException ex)
{
msg = "失败，错误原因：" + ex.Message;
tx.Rollback();
return 0;
}
}
}
/// <summary>
/// 执行SQL脚本文件 实现数据库事务。
/// </summary>
/// <param name="sqlScript">SQL脚本内容</param>
/// <param name="msg">返回执行信息</param>
/// <returns></returns>
public static bool ExecuteSqlScriptTextTran(string sqlScript, string iGetConn, ref string msg, System.ComponentModel.BackgroundWorker backgroundWorker = null, int times = -1)
{
bool bl = false;
List<string> SQLStringList = new List<string>();
string[] sqlArray = System.Text.RegularExpressions.Regex.Split(sqlScript, "go\r\n", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
for (int i = 0; i < sqlArray.Length; i++)
{
string sql = System.Text.RegularExpressions.Regex.Split(sqlArray[i], "\r\ngo", System.Text.RegularExpressions.RegexOptions.IgnoreCase)[0];
if (sql.Trim() != "")
{
SQLStringList.Add(sql);
}
}
int ret = ExecuteSqlTran(SQLStringList,iGetConn, ref msg, backgroundWorker, times);
if (ret > 0) {
bl = true;
}
return bl;
}
/// <summary>
/// 执行SQL脚本文件 实现数据库事务。
/// </summary>
/// <param name="sqlScriptFilePath">SQL脚本文件路径</param>
/// <param name="msg">返回执行信息</param>
/// <returns></returns>
public static bool ExecuteSqlScriptFileTran(string sqlScriptFilePath, string iGetConn, ref string msg, System.ComponentModel.BackgroundWorker backgroundWorker = null, int times = -1)
{
if (System.IO.File.Exists(sqlScriptFilePath))
{
string upgradeDatabaseSql = System.IO.File.ReadAllText(sqlScriptFilePath, System.Text.Encoding.UTF8);
return ExecuteSqlScriptTextTran(upgradeDatabaseSql,iGetConn, ref msg, backgroundWorker, times);
}
else
{
msg = "要执行的SQL脚本文件不存在！";
return false;
}
}
/// <summary>
/// 执行SQL脚本文件
/// </summary>
/// <param name="sqlScript">SQL脚本内容</param>
/// <param name="msg">返回执行信息</param>
/// <returns></returns>
public static bool ExecuteSqlScriptFile(string sqlScript, string iGetConn, ref string msg, System.ComponentModel.BackgroundWorker backgroundWorker = null,int times=-1)
{
bool bl = false;
string[] sqlArray = System.Text.RegularExpressions.Regex.Split(sqlScript, "go\r\n", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
//总计数器
float sumCount = sqlArray.Length;
//当前计数器
int currentCount = 0;
for (int i = 0; i < sqlArray.Length; i++)
{
currentCount++;
string sql = System.Text.RegularExpressions.Regex.Split(sqlArray[i], "\r\ngo", System.Text.RegularExpressions.RegexOptions.IgnoreCase)[0];
if (sql.Trim() != "")
{
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
try
{
List<System.Data.SqlClient.SqlParameter> parameterlist = new List<System.Data.SqlClient.SqlParameter>();
System.Data.SqlClient.SqlParameter[] parameters = parameterlist.ToArray();
if (times > 0)
{
LYFZ.Helper.SQLHelper.ExecuteSql(sql,times,iGetConn, parameters);
}
else
{
LYFZ.Helper.SQLHelper.ExecuteSql(sql,iGetConn, parameters);
}
msg = "成功!";
bl = true;
}
catch (System.Data.SqlClient.SqlException ex)
{
msg = "失败，错误原因：" + ex.Message;
bl = false;
break;
}
}
if (backgroundWorker != null)
{
try
{
int currentProgres =Convert.ToInt32(1000 / sumCount * currentCount);
backgroundWorker.ReportProgress(currentProgres);
}
catch { }
}
}
return bl;
}
/// <summary>
/// 执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <param name="connString">连接字符串</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString,string connString, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(connString))
{
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
int rows = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
}
}
/// <summary>
/// 执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString, int times, string iGetConn, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
cmd.CommandTimeout = times;
int rows = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static void ExecuteSqlTran(Hashtable SQLStringList, string iGetConn)
{
//循环
System.Collections.Generic.List<CommandInfo> cmdList = new List<CommandInfo>();
foreach (DictionaryEntry myDE in SQLStringList)
{
string cmdText = myDE.Key.ToString();
SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
cmdList.Add(new CommandInfo(cmdText, cmdParms));
}
ExecuteSqlTran(cmdList,iGetConn);
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static int ExecuteSqlTran(List<HPSocketCS.Extended.SerSqlCommandItme> serSqlCommandList, string iGetConn)
{
//System.Collections.Generic.List<string> sqlLIst,params SqlParameter[] cmdParList
if (serSqlCommandList.Count > 0)
{
System.Collections.Generic.List<CommandInfo> cmdList = new List<CommandInfo>();
int times = -1;
foreach (HPSocketCS.Extended.SerSqlCommandItme cItme in serSqlCommandList)
{
List<SqlParameter> cmdParameterList = new List<SqlParameter>();
foreach (HPSocketCS.Extended.SerSqlParameter ssParameter in cItme.SerSqlParameterList)
{
cmdParameterList.Add(ssParameter.ToSqlParameter());
}
CommandInfo command = new CommandInfo(cItme.SqlCommandText, cmdParameterList.ToArray(), (EffentNextType)cItme.EffentNextType);
if (cItme.CommandTimeout > 0)
{
times = cItme.CommandTimeout;
}
cmdList.Add(command);
}
return ExecuteSqlTran(cmdList, times,iGetConn);
}
else {
return 0;
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static int ExecuteSqlTran(System.Collections.Generic.List<CommandInfo> cmdList, string iGetConn)
{
return ExecuteSqlTran(cmdList,-1,iGetConn);
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static int ExecuteSqlTran(System.Collections.Generic.List<CommandInfo> cmdList, int times, string iGetConn)
{
using (SqlConnection conn = new SqlConnection(iGetConn))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
SqlCommand cmd = new SqlCommand();
if (times > 0)
{
cmd.CommandTimeout = times;
}
try
{
int count = 0;
//循环
foreach (CommandInfo myDE in cmdList)
{
string cmdText = myDE.CommandText;
SqlParameter[] cmdParms = myDE.Parameters;
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
{
if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
{
trans.Rollback();
return 0;
}
object obj = cmd.ExecuteScalar();
bool isHave = false;
if (obj == null && obj == DBNull.Value)
{
isHave = false;
}
isHave = Convert.ToInt32(obj) > 0;
if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
{
trans.Rollback();
return 0;
}
if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
{
trans.Rollback();
return 0;
}
continue;
}
int val = cmd.ExecuteNonQuery();
count += val;
if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
{
trans.Rollback();
return 0;
}
cmd.Parameters.Clear();
}
trans.Commit();
return count;
}
catch
{
trans.Rollback();
throw;
}
}
}
}
/// <summary>
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// </summary>
/// <param name="SQLString">计算查询结果语句</param>
/// <returns>查询结果（object）</returns>
public static object GetSingle(string SQLString, string iGetConn, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
object obj = cmd.ExecuteScalar();
cmd.Parameters.Clear();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
}
}
/// <summary>
/// 执行查询语句，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
/// </summary>
/// <param name="strSQL">查询语句</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string SQLString, string iGetConn, params SqlParameter[] cmdParms)
{
SqlConnection connection = new SqlConnection(iGetConn);
SqlCommand cmd = new SqlCommand();
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return myReader;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
// finally
// {
// cmd.Dispose();
// connection.Close();
// }
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet MasterQuery(string SQLString, params SqlParameter[] cmdParms)
{
return Query(SQLString, GetMasterConnString(), cmdParms);
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString, int times, string iGetConn, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
SqlCommand cmd = new SqlCommand();
cmd.CommandTimeout = times;
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataSet ds = new DataSet();
try
{
da.Fill(ds, "ds");
cmd.Parameters.Clear();
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <param name="connString">数据连接字符串</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString, string connString, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(connString))
{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataSet ds = new DataSet();
try
{
da.Fill(ds, "ds");
cmd.Parameters.Clear();
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
}
public static void PublicPrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
{
PrepareCommand(cmd,conn,trans,cmdText,cmdParms);
}
private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
{
if (conn.State != ConnectionState.Open)
conn.Open();
cmd.Connection = conn;
cmd.CommandText = cmdText;
if (trans != null)
cmd.Transaction = trans;
cmd.CommandType = CommandType.Text;//cmdType;
if (cmdParms != null)
{
foreach (SqlParameter parameter in cmdParms)
{
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
(parameter.Value == null))
{
parameter.Value = DBNull.Value;
}
cmd.Parameters.Add(parameter);
}
}
}
#endregion
#region 存储过程操作
/// <summary>
/// 执行存储过程
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <param name="tableName">DataSet结果中的表名</param>
/// <returns>DataSet</returns>
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, string iGetConn)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
DataSet dataSet = new DataSet();
connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
sqlDA.Fill(dataSet, tableName);
connection.Close();
return dataSet;
}
}
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times, string iGetConn)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
DataSet dataSet = new DataSet();
connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
sqlDA.SelectCommand.CommandTimeout = Times;
sqlDA.Fill(dataSet, tableName);
connection.Close();
return dataSet;
}
}
/// <summary>
/// 执行存储过程，返回影响的行数
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <param name="rowsAffected">影响的行数</param>
/// <returns></returns>
public static int RunProcedure(string storedProcName, IDataParameter[] parameters, string iGetConn, out int rowsAffected)
{
using (SqlConnection connection = new SqlConnection(iGetConn))
{
int result;
connection.Open();
SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
rowsAffected = command.ExecuteNonQuery();
result = (int)command.Parameters["ReturnValue"].Value;
//Connection.Close();
return result;
}
}
/// <summary>
/// 创建 SqlCommand 对象实例(用来返回一个整数值)
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <returns>SqlCommand 对象实例</returns>
private static SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
{
SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
command.Parameters.Add(new SqlParameter("ReturnValue",
SqlDbType.Int, 4, ParameterDirection.ReturnValue,
false, 0, 0, string.Empty, DataRowVersion.Default, null));
return command;
}
/// <summary>
/// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <returns>SqlCommand</returns>
private static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
{
SqlCommand command = new SqlCommand(storedProcName, connection);
command.CommandType = CommandType.StoredProcedure;
foreach (SqlParameter parameter in parameters)
{
if (parameter != null)
{
// 检查未分配值的输出参数,将其分配以DBNull.Value.
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
(parameter.Value == null))
{
parameter.Value = DBNull.Value;
}
command.Parameters.Add(parameter);
}
}
return command;
}
#endregion
}
}