c#中使用存储过程

 

首先创建存储过程，sql语句如下所示：

[sql] 
USE [YCYFFJKXT] 
GO 
/****** 对象:  StoredProcedure [dbo].[Login_UserCount]    脚本日期: 07/17/2012 14:53:18 ******/ 
SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 
CREATE PROC [dbo].[Login_UserCount] 
@ZH VARCHAR(20), 
@MM varchar(50), 
@Rowcount INT OUTPUT 
AS 
BEGIN 
 SELECT * FROM YHXX WHERE ZH=@ZH and MM=@MM 
 SET  @Rowcount=@@ROWCOUNT 
END 

c#中调用
[csharp] 
SqlConnection conn_Local = new SqlConnection(); 
            conn_Local.ConnectionString = "server=.;database=YCYFFJKXT;user id=sa;password=sa"; 
            try 
            { 
                conn_Local.Open(); 
                SqlCommand cmd_Count = new SqlCommand("Login_UserCount",conn_Local); 
                cmd_Count.CommandType = CommandType.StoredProcedure; 
 
                //添加输入查询参数、赋予值 
                cmd_Count.Parameters.Add("@ZH", SqlDbType.VarChar); 
                cmd_Count.Parameters.Add("@MM",SqlDbType.VarChar); 
                cmd_Count.Parameters["@ZH"].Value = "A"; 
                cmd_Count.Parameters["@MM"].Value = "B"; 
 
                //添加输出参数 
                cmd_Count.Parameters.Add("@Rowcount", SqlDbType.Int); 
                cmd_Count.Parameters["@Rowcount"].Direction = ParameterDirection.Output; 
 
                cmd_Count.ExecuteNonQuery(); 
 
                Console.WriteLine("受影响的行数是"+cmd_Count.Parameters["@Rowcount"].Value.ToString()); 
 
 
            } 
            catch (Exception ex) 
            { 
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                throw ex; 
            } 
            finally 
            { 
                conn_Local.Close(); 
            } 
            Console.ReadLine(); 
作者：pridescc