SQLHelper 2.0
//===============================================================================
// This file is based on the Microsoft Data Access Application Block for .NET
// For more information please go to
// http://msdn.microsoft.com/library/en-us/dnbda/html/daab-rm.asp
//modify by kingson . kingson_chen@hotmail.com . 2007.04.13
//===============================================================================
using System;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Collections;
/**//// <summary>
/// The SqlHelper class is intended to encapsulate high performance,
/// scalable best practices for common uses of SqlClient.
/// </summary>
public abstract class SqlHelper
...{
//Database connection strings
public static readonly string strConnection = ConfigurationManager.ConnectionStrings["ConnectionString1"].ConnectionString;
//public static readonly string ConnectionStringInventoryDistributedTransaction = ConfigurationManager.ConnectionStrings["SQLConnString2"].ConnectionString;
//public static readonly string ConnectionStringOrderDistributedTransaction = ConfigurationManager.ConnectionStrings["SQLConnString3"].ConnectionString;
//public static readonly string ConnectionStringProfile = ConfigurationManager.ConnectionStrings["SQLProfileConnString"].ConnectionString;
// Hashtable to store cached parameters
private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());
ExecuteNonQuery#region ExecuteNonQuery
/**//// <summary>
/// Execute a SqlCommand (that returns no resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
using (SqlConnection conn = new SqlConnection(connectionString))
...{
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return val;
}
}
/**//// <summary>
/// 使用預設連線
/// </summary>
/// <param name="cmdType">命令文字型別</param>
/// <param name="cmdText">命令文字</param>
/// <param name="commandParameters">引數集</param>
/// <returns>int</returns>
public static int ExecuteNonQuery(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
using (SqlConnection conn = new SqlConnection(strConnection))
...{
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return val;
}
}
/**//// <summary>
/// 使用預設連線,CommandType預設為StoredProcedure
/// </summary>
/// <param name="cmdText">儲存過程名</param>
/// <param name="commandParameters">引數集</param>
/// <returns>int</returns>
public static int ExecuteNonQuery(string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
using (SqlConnection conn = new SqlConnection(strConnection))
...{
PrepareCommand(cmd, conn, null, CommandType.StoredProcedure,cmdText, commandParameters);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return val;
}
}
/**//// <summary>
/// Execute a SqlCommand (that returns no resultset) against an existing database connection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="conn">an existing database connection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return val;
}
/**//// <summary>
/// Execute a SqlCommand (that returns no resultset) using an existing SQL Transaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="trans">an existing sql transaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlTransaction trans, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return val;
}
/**//// <summary>
/// Execute a SqlCommand that returns a resultset against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader r = ExecuteReader(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>A SqlDataReader containing the results</returns>
#endregion
ExecuteReader#region ExecuteReader
public static SqlDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
SqlConnection conn = new SqlConnection(connectionString);
// we use a try/catch here because if the method throws an exception we want to
// close the connection throw code, because no datareader will exist, hence the
// commandBehaviour.CloseConnection will not work
try
...{
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return rdr;
}
catch
...{
conn.Close();
throw;
}
}
/**//// <summary>
/// 使用預設連線
/// </summary>
/// <param name="cmdType">命令文字型別</param>
/// <param name="cmdText">命令文字</param>
/// <param name="commandParameters">引數集</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
SqlConnection conn = new SqlConnection(strConnection);
// we use a try/catch here because if the method throws an exception we want to
// close the connection throw code, because no datareader will exist, hence the
// commandBehaviour.CloseConnection will not work
try
...{
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return rdr;
}
catch
...{
conn.Close();
throw;
}
}
/**//// <summary>
/// 使用預設連線,CommandType預設為StoredProcedure
/// </summary>
/// <param name="cmdText">儲存過程名</param>
/// <param name="commandParameters">引數集</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
SqlConnection conn = new SqlConnection(strConnection);
// we use a try/catch here because if the method throws an exception we want to
// close the connection throw code, because no datareader will exist, hence the
// commandBehaviour.CloseConnection will not work
try
...{
PrepareCommand(cmd, conn, null, CommandType.StoredProcedure, cmdText, commandParameters);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return rdr;
}
catch
...{
conn.Close();
throw;
}
}
#endregion
ExecuteScalar#region ExecuteScalar
/**//// <summary>
/// Execute a SqlCommand that returns the first column of the first record against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>An object that should be converted to the expected type using Convert.To{Type}</returns>
public static object ExecuteScalar(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
using (SqlConnection connection = new SqlConnection(connectionString))
...{
PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return val;
}
}
/**//// <summary>
/// 使用定義好的連線字串
/// </summary>
/// <param name="cmdType">命令文字型別</param>
/// <param name="cmdText">命令文字</param>
/// <param name="commandParameters">引數集</param>
/// <returns>object</returns>
public static object ExecuteScalar(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
using (SqlConnection connection = new SqlConnection(strConnection))
...{
PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return val;
}
}
/**//// <summary>
/// 使用定義好的連線字串,CommandType預設為StoredProcedure
/// </summary>
/// <param name="cmdText">儲存過程名</param>
/// <param name="commandParameters">引數集</param>
/// <returns>object</returns>
public static object ExecuteScalar(string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
using (SqlConnection connection = new SqlConnection(strConnection))
...{
PrepareCommand(cmd, connection, null, CommandType.StoredProcedure, cmdText, commandParameters);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return val;
}
}
/**//// <summary>
/// Execute a SqlCommand that returns the first column of the first record against an existing database connection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="conn">an existing database connection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>An object that should be converted to the expected type using Convert.To{Type}</returns>
public static object ExecuteScalar(SqlConnection connection, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
...{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return val;
}
#endregion
ExecuteDataSet#region ExecuteDataSet
/**//// <summary>
/// 返加dataset
/// </summary>
/// <param name="connectionString">連線字串</param>
/// <param name="cmdType">命令型別，如StoredProcedure,Text</param>
/// <param name="cmdText">the stored procedure name or T-SQL command</param>
/// <returns>DataSet</returns>
public static DataSet ExecuteDataSet(string connectionString, CommandType cmdType, string cmdText)
...{
SqlConnection SqlDataConn = new SqlConnection(connectionString);
SqlCommand SqlComm = new SqlCommand(cmdText, SqlDataConn);
SqlComm.CommandType = cmdType;
SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm);
DataSet DS = new DataSet();
SqlDA.Fill(DS);
return DS;
}
/**//// <summary>
/// 使用定義好的連線字串
/// </summary>
/// <param name="cmdType">命令文字型別</param>
/// <param name="cmdText">命令文字</param>
/// <returns>DataSet</returns>
public static DataSet ExecuteDataSet(CommandType cmdType, string cmdText)
...{
SqlConnection SqlDataConn = new SqlConnection(strConnection);
SqlCommand SqlComm = new SqlCommand(cmdText, SqlDataConn);
SqlComm.CommandType = cmdType;
SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm);
DataSet DS = new DataSet();
SqlDA.Fill(DS);
return DS;
}
/**//// <summary>
/// 使用定義好的連線字串,CommandType預設為StoredProcedure
/// </summary>
/// <param name="cmdText">儲存過程名</param>
/// <returns>object</returns>
public static DataSet ExecuteDataSet(string cmdText)
...{
SqlConnection SqlDataConn = new SqlConnection(strConnection);
SqlCommand SqlComm = new SqlCommand(cmdText, SqlDataConn);
SqlComm.CommandType = CommandType.StoredProcedure;
SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm);
DataSet DS = new DataSet();
SqlDA.Fill(DS);
return DS;
}
/**//// <summary>
/// 返加dataset
/// </summary>
/// <param name="connectionString">連線字串</param>
/// <param name="cmdType">命令型別，如StoredProcedure,Text</param>
/// <param name="cmdText">the stored procedure name or T-SQL command</param>
/// <param name="SQLparams">引數集</param>
/// <returns>DataSet</returns>
public static DataSet ExecuteDataSet(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] SQLparams)
...{
SqlConnection SqlDataConn = new SqlConnection(connectionString);
SqlCommand SqlComm = AddSqlParas(SQLparams, cmdText, cmdType, SqlDataConn);
SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm);
DataSet DS = new DataSet();
SqlDA.Fill(DS);
return DS;
}
public static DataSet ExecuteDataSet( CommandType cmdType, string cmdText, params SqlParameter[] SQLparams)
...{
SqlConnection SqlDataConn = new SqlConnection(strConnection);
SqlCommand SqlComm = AddSqlParas(SQLparams, cmdText, cmdType, SqlDataConn);
SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm);
DataSet DS = new DataSet();
SqlDA.Fill(DS);
return DS;
}
/**//// <summary>
/// 使用定義好的連線字串,CommandType預設為StoredProcedure
/// </summary>
/// <param name="cmdText">儲存過程名</param>
/// <param name="commandParameters">引數集</param>
/// <returns>DataSet</returns>
public static DataSet ExecuteDataSet(string cmdText, params SqlParameter[] SQLparams)
...{
SqlConnection SqlDataConn = new SqlConnection(strConnection);
SqlCommand SqlComm = AddSqlParas(SQLparams,cmdText,CommandType.StoredProcedure, SqlDataConn);
SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm);
DataSet DS = new DataSet();
SqlDA.Fill(DS);
return DS;
}
#endregion
CacheParameters#region CacheParameters
/**//// <summary>
/// add parameter array to the cache
/// </summary>
/// <param name="cacheKey">Key to the parameter cache</param>
/// <param name="cmdParms">an array of SqlParamters to be cached</param>
public static void CacheParameters(string cacheKey, params SqlParameter[] commandParameters)
...{
parmCache[cacheKey] = commandParameters;
}
#endregion
GetCachedParameters#region GetCachedParameters
/**//// <summary>
/// Retrieve cached parameters
/// </summary>
/// <param name="cacheKey">key used to lookup parameters</param>
/// <returns>Cached SqlParamters array</returns>
public static SqlParameter[] GetCachedParameters(string cacheKey)
...{
SqlParameter[] cachedParms = (SqlParameter[])parmCache[cacheKey];
if (cachedParms == null)
return null;
SqlParameter[] clonedParms = new SqlParameter[cachedParms.Length];
for (int i = 0, j = cachedParms.Length; i < j; i++)
clonedParms[i] = (SqlParameter)((ICloneable)cachedParms[i]).Clone();
return clonedParms;
}
#endregion
PrepareCommand#region PrepareCommand
/**//// <summary>
/// Prepare a command for execution
/// </summary>
/// <param name="cmd">SqlCommand object</param>
/// <param name="conn">SqlConnection object</param>
/// <param name="trans">SqlTransaction object</param>
/// <param name="cmdType">Cmd type e.g. stored procedure or text</param>
/// <param name="cmdText">Command text, e.g. Select * from Products</param>
/// <param name="cmdParms">SqlParameters to use in the command</param>
private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, 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 = cmdType;
if (cmdParms != null)
...{
foreach (SqlParameter parm in cmdParms)
cmd.Parameters.Add(parm);
}
}
#endregion
AddSqlParas#region AddSqlParas
/**//// <summary>
/// 獲得一個完整的Command
/// </summary>
/// <param name="SqlParas">SQL的引數陣列</param>
/// <param name="CommandText">命令文字</param>
/// <param name="IsStoredProcedure">命令文字是否是儲存過程</param>
/// <param name="SqlDataConn">資料連線</param>
/// <returns></returns>
private static SqlCommand AddSqlParas(SqlParameter[] SqlParas, string cmdText, CommandType cmdType, SqlConnection SqlDataConn)
...{
SqlCommand SqlComm = new SqlCommand(cmdText, SqlDataConn);
SqlComm.CommandType = cmdType;
if (SqlParas != null)
...{
foreach (SqlParameter p in SqlParas)
...{
SqlComm.Parameters.Add(p);
}
}
return SqlComm;
}
#endregion
}
// This file is based on the Microsoft Data Access Application Block for .NET// For more information please go to // http://msdn.microsoft.com/library/en-us/dnbda/html/daab-rm.asp//modify by kingson . kingson_chen@hotmail.com . 2007.04.13//===============================================================================using System;using System.Configuration;using System.Data;using System.Data.SqlClient;using System.Collections; /**//// <summary> /// The SqlHelper class is intended to encapsulate high performance, /// scalable best practices for common uses of SqlClient. /// </summary> public abstract class SqlHelper ...{ //Database connection strings public static readonly string strConnection = ConfigurationManager.ConnectionStrings["ConnectionString1"].ConnectionString; //public static readonly string ConnectionStringInventoryDistributedTransaction = ConfigurationManager.ConnectionStrings["SQLConnString2"].ConnectionString; //public static readonly string ConnectionStringOrderDistributedTransaction = ConfigurationManager.ConnectionStrings["SQLConnString3"].ConnectionString; //public static readonly string ConnectionStringProfile = ConfigurationManager.ConnectionStrings["SQLProfileConnString"].ConnectionString; // Hashtable to store cached parameters private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable()); ExecuteNonQuery#region ExecuteNonQuery /**//// <summary> /// Execute a SqlCommand (that returns no resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">a valid connection string for a SqlConnection</param> /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">the stored procedure name or T-SQL command</param> /// <param name="commandParameters">an array of SqlParamters used to execute the command</param> /// <returns>an int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); using (SqlConnection conn = new SqlConnection(connectionString)) ...{ PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters); int val = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); return val; } } /**//// <summary> /// 使用預設連線 /// </summary> /// <param name="cmdType">命令文字型別</param> /// <param name="cmdText">命令文字</param> /// <param name="commandParameters">引數集</param> /// <returns>int</returns> public static int ExecuteNonQuery(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); using (SqlConnection conn = new SqlConnection(strConnection)) ...{ PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters); int val = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); return val; } } /**//// <summary> /// 使用預設連線,CommandType預設為StoredProcedure /// </summary> /// <param name="cmdText">儲存過程名</param> /// <param name="commandParameters">引數集</param> /// <returns>int</returns> public static int ExecuteNonQuery(string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); using (SqlConnection conn = new SqlConnection(strConnection)) ...{ PrepareCommand(cmd, conn, null, CommandType.StoredProcedure,cmdText, commandParameters); int val = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); return val; } } /**//// <summary> /// Execute a SqlCommand (that returns no resultset) against an existing database connection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="conn">an existing database connection</param> /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">the stored procedure name or T-SQL command</param> /// <param name="commandParameters">an array of SqlParamters used to execute the command</param> /// <returns>an int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlConnection connection, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters); int val = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); return val; } /**//// <summary> /// Execute a SqlCommand (that returns no resultset) using an existing SQL Transaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="trans">an existing sql transaction</param> /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">the stored procedure name or T-SQL command</param> /// <param name="commandParameters">an array of SqlParamters used to execute the command</param> /// <returns>an int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlTransaction trans, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, commandParameters); int val = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); return val; } /**//// <summary> /// Execute a SqlCommand that returns a resultset against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader r = ExecuteReader(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">a valid connection string for a SqlConnection</param> /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">the stored procedure name or T-SQL command</param> /// <param name="commandParameters">an array of SqlParamters used to execute the command</param> /// <returns>A SqlDataReader containing the results</returns> #endregion ExecuteReader#region ExecuteReader public static SqlDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); SqlConnection conn = new SqlConnection(connectionString); // we use a try/catch here because if the method throws an exception we want to // close the connection throw code, because no datareader will exist, hence the // commandBehaviour.CloseConnection will not work try ...{ PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); cmd.Parameters.Clear(); return rdr; } catch ...{ conn.Close(); throw; } } /**//// <summary> /// 使用預設連線 /// </summary> /// <param name="cmdType">命令文字型別</param> /// <param name="cmdText">命令文字</param> /// <param name="commandParameters">引數集</param> /// <returns>SqlDataReader</returns> public static SqlDataReader ExecuteReader(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); SqlConnection conn = new SqlConnection(strConnection); // we use a try/catch here because if the method throws an exception we want to // close the connection throw code, because no datareader will exist, hence the // commandBehaviour.CloseConnection will not work try ...{ PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); cmd.Parameters.Clear(); return rdr; } catch ...{ conn.Close(); throw; } } /**//// <summary> /// 使用預設連線,CommandType預設為StoredProcedure /// </summary> /// <param name="cmdText">儲存過程名</param> /// <param name="commandParameters">引數集</param> /// <returns>SqlDataReader</returns> public static SqlDataReader ExecuteReader(string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); SqlConnection conn = new SqlConnection(strConnection); // we use a try/catch here because if the method throws an exception we want to // close the connection throw code, because no datareader will exist, hence the // commandBehaviour.CloseConnection will not work try ...{ PrepareCommand(cmd, conn, null, CommandType.StoredProcedure, cmdText, commandParameters); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); cmd.Parameters.Clear(); return rdr; } catch ...{ conn.Close(); throw; } } #endregion ExecuteScalar#region ExecuteScalar /**//// <summary> /// Execute a SqlCommand that returns the first column of the first record against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">a valid connection string for a SqlConnection</param> /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">the stored procedure name or T-SQL command</param> /// <param name="commandParameters">an array of SqlParamters used to execute the command</param> /// <returns>An object that should be converted to the expected type using Convert.To{Type}</returns> public static object ExecuteScalar(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); using (SqlConnection connection = new SqlConnection(connectionString)) ...{ PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters); object val = cmd.ExecuteScalar(); cmd.Parameters.Clear(); return val; } } /**//// <summary> /// 使用定義好的連線字串 /// </summary> /// <param name="cmdType">命令文字型別</param> /// <param name="cmdText">命令文字</param> /// <param name="commandParameters">引數集</param> /// <returns>object</returns> public static object ExecuteScalar(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); using (SqlConnection connection = new SqlConnection(strConnection)) ...{ PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters); object val = cmd.ExecuteScalar(); cmd.Parameters.Clear(); return val; } } /**//// <summary> /// 使用定義好的連線字串,CommandType預設為StoredProcedure /// </summary> /// <param name="cmdText">儲存過程名</param> /// <param name="commandParameters">引數集</param> /// <returns>object</returns> public static object ExecuteScalar(string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); using (SqlConnection connection = new SqlConnection(strConnection)) ...{ PrepareCommand(cmd, connection, null, CommandType.StoredProcedure, cmdText, commandParameters); object val = cmd.ExecuteScalar(); cmd.Parameters.Clear(); return val; } } /**//// <summary> /// Execute a SqlCommand that returns the first column of the first record against an existing database connection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="conn">an existing database connection</param> /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">the stored procedure name or T-SQL command</param> /// <param name="commandParameters">an array of SqlParamters used to execute the command</param> /// <returns>An object that should be converted to the expected type using Convert.To{Type}</returns> public static object ExecuteScalar(SqlConnection connection, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) ...{ SqlCommand cmd = new SqlCommand(); PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters); object val = cmd.ExecuteScalar(); cmd.Parameters.Clear(); return val; } #endregion ExecuteDataSet#region ExecuteDataSet /**//// <summary> /// 返加dataset /// </summary> /// <param name="connectionString">連線字串</param> /// <param name="cmdType">命令型別，如StoredProcedure,Text</param> /// <param name="cmdText">the stored procedure name or T-SQL command</param> /// <returns>DataSet</returns> public static DataSet ExecuteDataSet(string connectionString, CommandType cmdType, string cmdText) ...{ SqlConnection SqlDataConn = new SqlConnection(connectionString); SqlCommand SqlComm = new SqlCommand(cmdText, SqlDataConn); SqlComm.CommandType = cmdType; SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm); DataSet DS = new DataSet(); SqlDA.Fill(DS); return DS; } /**//// <summary> /// 使用定義好的連線字串 /// </summary> /// <param name="cmdType">命令文字型別</param> /// <param name="cmdText">命令文字</param> /// <returns>DataSet</returns> public static DataSet ExecuteDataSet(CommandType cmdType, string cmdText) ...{ SqlConnection SqlDataConn = new SqlConnection(strConnection); SqlCommand SqlComm = new SqlCommand(cmdText, SqlDataConn); SqlComm.CommandType = cmdType; SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm); DataSet DS = new DataSet(); SqlDA.Fill(DS); return DS; } /**//// <summary> /// 使用定義好的連線字串,CommandType預設為StoredProcedure /// </summary> /// <param name="cmdText">儲存過程名</param> /// <returns>object</returns> public static DataSet ExecuteDataSet(string cmdText) ...{ SqlConnection SqlDataConn = new SqlConnection(strConnection); SqlCommand SqlComm = new SqlCommand(cmdText, SqlDataConn); SqlComm.CommandType = CommandType.StoredProcedure; SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm); DataSet DS = new DataSet(); SqlDA.Fill(DS); return DS; } /**//// <summary> /// 返加dataset /// </summary> /// <param name="connectionString">連線字串</param> /// <param name="cmdType">命令型別，如StoredProcedure,Text</param> /// <param name="cmdText">the stored procedure name or T-SQL command</param> /// <param name="SQLparams">引數集</param> /// <returns>DataSet</returns> public static DataSet ExecuteDataSet(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] SQLparams) ...{ SqlConnection SqlDataConn = new SqlConnection(connectionString); SqlCommand SqlComm = AddSqlParas(SQLparams, cmdText, cmdType, SqlDataConn); SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm); DataSet DS = new DataSet(); SqlDA.Fill(DS); return DS; } public static DataSet ExecuteDataSet( CommandType cmdType, string cmdText, params SqlParameter[] SQLparams) ...{ SqlConnection SqlDataConn = new SqlConnection(strConnection); SqlCommand SqlComm = AddSqlParas(SQLparams, cmdText, cmdType, SqlDataConn); SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm); DataSet DS = new DataSet(); SqlDA.Fill(DS); return DS; } /**//// <summary> /// 使用定義好的連線字串,CommandType預設為StoredProcedure /// </summary> /// <param name="cmdText">儲存過程名</param> /// <param name="commandParameters">引數集</param> /// <returns>DataSet</returns> public static DataSet ExecuteDataSet(string cmdText, params SqlParameter[] SQLparams) ...{ SqlConnection SqlDataConn = new SqlConnection(strConnection); SqlCommand SqlComm = AddSqlParas(SQLparams,cmdText,CommandType.StoredProcedure, SqlDataConn); SqlDataAdapter SqlDA = new SqlDataAdapter(SqlComm); DataSet DS = new DataSet(); SqlDA.Fill(DS); return DS; } #endregion CacheParameters#region CacheParameters /**//// <summary> /// add parameter array to the cache /// </summary> /// <param name="cacheKey">Key to the parameter cache</param> /// <param name="cmdParms">an array of SqlParamters to be cached</param> public static void CacheParameters(string cacheKey, params SqlParameter[] commandParameters) ...{ parmCache[cacheKey] = commandParameters; } #endregion GetCachedParameters#region GetCachedParameters /**//// <summary> /// Retrieve cached parameters /// </summary> /// <param name="cacheKey">key used to lookup parameters</param> /// <returns>Cached SqlParamters array</returns> public static SqlParameter[] GetCachedParameters(string cacheKey) ...{ SqlParameter[] cachedParms = (SqlParameter[])parmCache[cacheKey]; if (cachedParms == null) return null; SqlParameter[] clonedParms = new SqlParameter[cachedParms.Length]; for (int i = 0, j = cachedParms.Length; i < j; i++) clonedParms[i] = (SqlParameter)((ICloneable)cachedParms[i]).Clone(); return clonedParms; } #endregion PrepareCommand#region PrepareCommand /**//// <summary> /// Prepare a command for execution /// </summary> /// <param name="cmd">SqlCommand object</param> /// <param name="conn">SqlConnection object</param> /// <param name="trans">SqlTransaction object</param> /// <param name="cmdType">Cmd type e.g. stored procedure or text</param> /// <param name="cmdText">Command text, e.g. Select * from Products</param> /// <param name="cmdParms">SqlParameters to use in the command</param> private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, 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 = cmdType; if (cmdParms != null) ...{ foreach (SqlParameter parm in cmdParms) cmd.Parameters.Add(parm); } } #endregion AddSqlParas#region AddSqlParas /**//// <summary> /// 獲得一個完整的Command /// </summary> /// <param name="SqlParas">SQL的引數陣列</param> /// <param name="CommandText">命令文字</param> /// <param name="IsStoredProcedure">命令文字是否是儲存過程</param> /// <param name="SqlDataConn">資料連線</param> /// <returns></returns> private static SqlCommand AddSqlParas(SqlParameter[] SqlParas, string cmdText, CommandType cmdType, SqlConnection SqlDataConn) ...{ SqlCommand SqlComm = new SqlCommand(cmdText, SqlDataConn); SqlComm.CommandType = cmdType; if (SqlParas != null) ...{ foreach (SqlParameter p in SqlParas) ...{ SqlComm.Parameters.Add(p); } } return SqlComm; } #endregion }相關文章
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