调用存储过程的类(转)
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.ComponentModel;
namespace SQLHelper
{
/// <summary>
/// SQLHelper类封装对SQL Server数据库的添加、删除、修改和选择等操作
/// </summary>
public class SQLHelper
{
/// 连接数据源
private SqlConnection myConnection = null;
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(System.Configuration.ConfigurationSettings.AppSettings["constr"].ToString());
}
if (myConnection.State == ConnectionState.Closed)
{
try
{
///打开数据库连接
myConnection.Open();
}
catch (Exception ex)
{
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///关闭已经打开的数据库连接
myConnection.Close();
}
}
}
/// <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 = CreateProcCommand(procName, null);
try
{
///执行存储过程
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///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 = CreateProcCommand(procName, prams);
try
{
///执行存储过程
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///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 = CreateProcCommand(procName, null);
try
{
///读取数据
dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch (Exception ex)
{
dataReader = null;
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
}
/// <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="dataSet">返回DataReader对象</param>
public void RunProc(string procName, SqlParameter[] prams, out SqlDataReader dataReader)
{
///创建Command
SqlCommand cmd = CreateProcCommand(procName, prams);
try
{
///读取数据
dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch (Exception ex)
{
dataReader = null;
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
}
/// <summary>
/// 执行存储过程
/// </summary>
/// <param name="procName">存储过程的名称</param>
/// <param name="dataSet">返回DataSet对象</param>
public void RunProc(string procName, ref DataSet dataSet)
{
if (dataSet == null)
{
dataSet = new DataSet();
}
///创建SqlDataAdapter
SqlDataAdapter da = CreateProcDataAdapter(procName, null);
try
{
///读取数据
da.Fill(dataSet);
}
catch (Exception ex)
{
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///关闭数据库的连接
Close();
}
}
/// <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="dataSet">返回DataSet对象</param>
public void RunProc(string procName, SqlParameter[] prams, ref DataSet dataSet)
{
if (dataSet == null)
{
dataSet = new DataSet();
}
///创建SqlDataAdapter
SqlDataAdapter da = CreateProcDataAdapter(procName, prams);
try
{
///读取数据
da.Fill(dataSet);
}
catch (Exception ex)
{
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///关闭数据库的连接
Close();
}
}
/// <summary>
/// 执行SQL语句
/// </summary>
/// <param name="cmdText">SQL语句</param>
/// <returns>返回值</returns>
public int RunSQL(string cmdText)
{
SqlCommand cmd = CreateSQLCommand(cmdText, null);
try
{
///执行存储过程
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///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SQL语句
/// </summary>
/// <param name="cmdText">SQL语句</param>
/// <param name="prams">SQL语句所需参数</param>
/// <returns>返回值</returns>
public int RunSQL(string cmdText, SqlParameter[] prams)
{
SqlCommand cmd = CreateSQLCommand(cmdText, prams);
try
{
///执行存储过程
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///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SQL语句
/// </summary>
/// <param name="cmdText">SQL语句</param>
/// <param name="dataReader">返回DataReader对象</param>
public void RunSQL(string cmdText, out SqlDataReader dataReader)
{
///创建Command
SqlCommand cmd = CreateSQLCommand(cmdText, null);
try
{
///读取数据
dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch (Exception ex)
{
dataReader = null;
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
}
/// <summary>
/// 执行SQL语句
/// </summary>
/// <param name="cmdText">SQL语句</param>
/// <param name="prams">SQL语句所需参数</param>
/// <param name="dataReader">返回DataReader对象</param>
public void RunSQL(string cmdText, SqlParameter[] prams, out SqlDataReader dataReader)
{
///创建Command
SqlCommand cmd = CreateSQLCommand(cmdText, prams);
try
{
///读取数据
dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch (Exception ex)
{
dataReader = null;
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
}
/// <summary>
/// 执行SQL语句
/// </summary>
/// <param name="cmdText">SQL语句</param>
/// <param name="dataSet">返回DataSet对象</param>
public void RunSQL(string cmdText, ref DataSet dataSet)
{
if (dataSet == null)
{
dataSet = new DataSet();
}
///创建SqlDataAdapter
SqlDataAdapter da = CreateSQLDataAdapter(cmdText, null);
try
{
///读取数据
da.Fill(dataSet);
}
catch (Exception ex)
{
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///关闭数据库的连接
Close();
}
}
/// <summary>
/// 执行SQL语句
/// </summary>
/// <param name="cmdText">SQL语句</param>
/// <param name="prams">SQL语句所需参数</param>
/// <param name="dataSet">返回DataSet对象</param>
public void RunSQL(string cmdText, SqlParameter[] prams, ref DataSet dataSet)
{
if (dataSet == null)
{
dataSet = new DataSet();
}
///创建SqlDataAdapter
SqlDataAdapter da = CreateProcDataAdapter(cmdText, prams);
try
{
///读取数据
da.Fill(dataSet);
}
catch (Exception ex)
{
///记录错误日志
SystemError.CreateErrorLog(ex.Message);
}
finally
{
///关闭数据库的连接
Close();
}
}
/// <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 CreateProcCommand(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>
/// 创建一个SqlCommand对象以此来执行存储过程
/// </summary>
/// <param name="cmdText">SQL语句</param>
/// <param name="prams">SQL语句所需参数</param>
/// <returns>返回SqlCommand对象</returns>
private SqlCommand CreateSQLCommand(string cmdText, SqlParameter[] prams)
{
///打开数据库连接
Open();
///设置Command
SqlCommand cmd = new SqlCommand(cmdText, myConnection);
///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>
/// 创建一个SqlDataAdapter对象，用此来执行存储过程
/// </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SqlDataAdapter对象</returns>
private SqlDataAdapter CreateProcDataAdapter(string procName, SqlParameter[] prams)
{
///打开数据库连接
Open();
///设置SqlDataAdapter对象
SqlDataAdapter da = new SqlDataAdapter(procName, myConnection);
da.SelectCommand.CommandType = CommandType.StoredProcedure;
///添加把存储过程的参数
if (prams != null)
{
foreach (SqlParameter parameter in prams)
{
da.SelectCommand.Parameters.Add(parameter);
}
}
///添加返回参数ReturnValue
da.SelectCommand.Parameters.Add(
new SqlParameter(RETURNVALUE, SqlDbType.Int, 4, ParameterDirection.ReturnValue,
false, 0, 0, string.Empty, DataRowVersion.Default, null));
///返回创建的SqlDataAdapter对象
return da;
}
/// <summary>
/// 创建一个SqlDataAdapter对象，用此来执行SQL语句
/// </summary>
/// <param name="cmdText">SQL语句</param>
/// <param name="prams">SQL语句所需参数</param>
/// <returns>返回SqlDataAdapter对象</returns>
private SqlDataAdapter CreateSQLDataAdapter(string cmdText, SqlParameter[] prams)
{
///打开数据库连接
Open();
///设置SqlDataAdapter对象
SqlDataAdapter da = new SqlDataAdapter(cmdText, myConnection);
///添加把存储过程的参数
if (prams != null)
{
foreach (SqlParameter parameter in prams)
{
da.SelectCommand.Parameters.Add(parameter);
}
}
///添加返回参数ReturnValue
da.SelectCommand.Parameters.Add(
new SqlParameter(RETURNVALUE, SqlDbType.Int, 4, ParameterDirection.ReturnValue,
false, 0, 0, string.Empty, DataRowVersion.Default, null));
///返回创建的SqlDataAdapter对象
return da;
}
/// <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)
{
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)
{
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)
{
return CreateParam(ParamName, DbType, Size, ParameterDirection.ReturnValue, null);
}
}
}
