asp.net数据库操作类，存储过程处理

using System;

using System.Data;

using System.Data.SqlClient;

using System.Configuration;

using System.ComponentModel;

namespace SQLHelper

{

/// <summary>

/// Class1 的摘要说明。

/// </summary>

public class SQLHelper

{

// 连接数据源

private SqlConnection myConnection;

private readonly string RETURNVALUE = "RETURNVALUE";

/// <summary>

/// 打开数据库连接.

/// </summary>

private void Open()

{

// 打开数据库连接

if (myConnection == null)

{

myConnection = new SqlConnection(ConfigurationSettings.AppSettings["SQLCONNECTIONSTRING"].ToString());

}

if(myConnection.State == ConnectionState.Closed)

{

try

{

///打开数据库连接

myConnection.Open();

}

catch(Exception ex)

{

SystemError.SystemLog(ex.Message);

}

finally

{

///关闭已经打开的数据库连接

}

}

}

/// <summary>

/// 关闭数据库连接

/// </summary>

public void Close()

{

///判断连接是否已经创建

if(myConnection != null)

{

///判断连接的状态是否打开

if(myConnection.State == ConnectionState.Open)

{

myConnection.Close();

}

}

}

/// <summary>

/// 释放资源

/// </summary>

public void Dispose()

{

// 确认连接是否已经关闭

if (myConnection != null)

{

myConnection.Dispose();

myConnection = null;

}

}

/// <summary>

/// 执行存储过程

/// </summary>

/// <param name="procName">存储过程的名称</param>

/// <returns>返回存储过程返回值</returns>

public int RunProc(string procName)

{

SqlCommand cmd = CreateCommand(procName, null);

try

{

///执行存储过程

cmd.ExecuteNonQuery();

}

catch(Exception ex)

{

///记录错误日志

SystemError.SystemLog(ex.Message);

}

///关闭数据库的连接

Close();

///返回存储过程的参数值

return (int)cmd.Parameters[RETURNVALUE].Value;

}

/// <summary>

/// 执行存储过程

/// </summary>

/// <param name="procName">存储过程名称</param>

/// <param name="prams">存储过程所需参数</param>

/// <returns>返回存储过程返回值</returns>

public int RunProc(string procName, SqlParameter[] prams)

{

SqlCommand cmd = CreateCommand(procName, prams);

try

{

///执行存储过程

cmd.ExecuteNonQuery();

}

catch(Exception ex)

{

///记录错误日志

SystemError.SystemLog(ex.Message);

}

///关闭数据库的连接

Close();

///返回存储过程的参数值

return (int)cmd.Parameters[RETURNVALUE].Value;

}

/// <summary>

/// 执行存储过程

/// </summary>

/// <param name="procName">存储过程的名称</param>

/// <param name="dataReader">返回存储过程返回值</param>

public void RunProc(string procName, out SqlDataReader dataReader)

{

///创建Command

SqlCommand cmd = CreateCommand(procName, null);

///读取数据

dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

}

/// <summary>

/// 执行存储过程

/// </summary>

/// <param name="procName">存储过程的名称</param>

/// <param name="prams">存储过程所需参数</param>

/// <param name="dataReader">存储过程所需参数</param>

public void RunProc(string procName, SqlParameter[] prams, out SqlDataReader dataReader)

{

///创建Command

SqlCommand cmd = CreateCommand(procName, prams);

///读取数据

dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

}

/// <summary>

/// 创建一个SqlCommand对象以此来执行存储过程

/// </summary>

/// <param name="procName">存储过程的名称</param>

/// <param name="prams">存储过程所需参数</param>

/// <returns>返回SqlCommand对象</returns>

private SqlCommand CreateCommand(string procName, SqlParameter[] prams)

{

///打开数据库连接

Open();

///设置Command

SqlCommand cmd = new SqlCommand(procName, myConnection);

cmd.CommandType = CommandType.StoredProcedure;

///添加把存储过程的参数

if (prams != null)

{

foreach (SqlParameter parameter in prams)

{

cmd.Parameters.Add(parameter);

}

}

///添加返回参数ReturnValue

cmd.Parameters.Add(

new SqlParameter(RETURNVALUE, SqlDbType.Int,4,ParameterDirection.ReturnValue,

false,0,0,string.Empty, DataRowVersion.Default,null));

///返回创建的SqlCommand对象

return cmd;

}

/// <summary>

/// 生成存储过程参数

/// </summary>

/// <param name="ParamName">存储过程名称</param>

/// <param name="DbType">参数类型</param>

/// <param name="Size">参数大小</param>

/// <param name="Direction">参数方向</param>

/// <param name="Value">参数值</param>

/// <returns>新的 parameter 对象</returns>

public SqlParameter CreateParam(string ParamName, SqlDbType DbType, Int32 Size, ParameterDirection Direction, object Value)

{

SqlParameter param;

///当参数大小为0时，不使用该参数大小值

if(Size > 0)

{

param = new SqlParameter(ParamName, DbType, Size);

}

else

{

///当参数大小为0时，不使用该参数大小值

param = new SqlParameter(ParamName, DbType);

}

///创建输出类型的参数

param.Direction = Direction;

if (!(Direction == ParameterDirection.Output && Value == null))

{

param.Value = Value;

}

///返回创建的参数

return param;

}

/// <summary>

/// 传入输入参数

/// </summary>

/// <param name="ParamName">存储过程名称</param>

/// <param name="DbType">参数类型</param></param>

/// <param name="Size">参数大小</param>

/// <param name="Value">参数值</param>

/// <returns>新的parameter 对象</returns>

public SqlParameter CreateInParam(string ParamName, SqlDbType DbType, int Size, object Value)

{

///创建输入类型的参数

return CreateParam(ParamName, DbType, Size, ParameterDirection.Input, Value);

}

/// <summary>

/// 传入返回值参数

/// </summary>

/// <param name="ParamName">存储过程名称</param>

/// <param name="DbType">参数类型</param>

/// <param name="Size">参数大小</param>

/// <returns>新的 parameter 对象</returns>

public SqlParameter CreateOutParam(string ParamName, SqlDbType DbType, int Size)

{

///创建输出类型的参数

return CreateParam(ParamName, DbType, Size, ParameterDirection.Output, null);

}

/// <summary>

/// 传入返回值参数

/// </summary>

/// <param name="ParamName">存储过程名称</param>

/// <param name="DbType">参数类型</param>

/// <param name="Size">参数大小</param>

/// <returns>新的 parameter 对象</returns>

public SqlParameter CreateReturnParam(string ParamName, SqlDbType DbType, int Size)

{

///创建返回类型的参数

return CreateParam(ParamName, DbType, Size, ParameterDirection.ReturnValue, null);

}

}

}