SQL SERVER C#数据库操作类

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace LiTianPing.SQLServerDAL //可以修改成实际项目的命名空间名称
{
 /// <summary>
 /// Copyright (C) 2004-2008 LiTianPing 
 /// 数据访问基础类(基于SQLServer)
 /// 用户可以修改满足自己项目的需要。
 /// </summary>
 public abstract class DbHelperSQL
 {
  //数据库连接字符串(web.config来配置)
  //<add key="ConnectionString" value="server=127.0.0.1;database=DATABASE;uid=sa;pwd=" />  
  protected static string connectionString = ConfigurationSettings.AppSettings["ConnectionString"];
  public DbHelperSQL()
  {   
  }

  公用方法

  执行简单SQL语句

  执行带参数的SQL语句

  #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>
  /// <returns>SqlDataReader</returns>
  public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters )
  {
   SqlConnection connection = new SqlConnection(connectionString);
   SqlDataReader returnReader;
   connection.Open();
   SqlCommand command = BuildQueryCommand( connection,storedProcName, parameters );
   command.CommandType = CommandType.StoredProcedure;
   returnReader = command.ExecuteReader();    
   return returnReader;   
  }
  
  
  /// <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 )
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    DataSet dataSet = new DataSet();
    connection.Open();
    SqlDataAdapter sqlDA = new SqlDataAdapter();
    sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters );
    sqlDA.Fill( dataSet, tableName );
    connection.Close();
    return dataSet;
   }
  }

  
  /// <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)
   {
    command.Parameters.Add( parameter );
   }
   return command;   
  }
  
  /// <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, out int rowsAffected )
  {
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
    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;
  }
  #endregion 

 }
}