C#中调用SQL存储过程(带输入输出参数的例子)

 using System;using System.Collections.Generic;using System.Text;using System.Data;using System.Data.SqlClient;namespace StoreProduceTest{ public class Program { /** * 存储过程 * * create procedure queryStuNameById @stuId varchar(10),--输入参数 @stuName varchar(10) output --输出参数 as select @stuName=stuName from stuInfo where stuId=@stuId * */ static void Main(string[] args) { Operater op = new Operater(); string name = op.QueryStuNameById("1234"); Console.WriteLine(string.Format("学号为1234的学生的姓名为{0}", name)); } } public class Operater { private string ConStr = "server=.;database=User;uid=sa;pwd=1234"; private SqlConnection sqlCon = null; private SqlCommand sqlComm = null; SqlDataReader dr = null; public string QueryStuNameById(string Id) { string name = ""; try { using (sqlCon = new SqlConnection(ConStr)) { sqlCon.Open(); sqlComm = new SqlCommand("queryStuNameById", sqlCon); //设置命令的类型为存储过程 sqlComm.CommandType = CommandType.StoredProcedure; //设置参数 sqlComm.Parameters.Add("@stuId", SqlDbType.VarChar); //注意输出参数要设置大小,否则size默认为0, sqlComm.Parameters.Add("@stuName", SqlDbType.VarChar, 10); //设置参数的类型为输出参数,默认情况下是输入, sqlComm.Parameters["@stuName"].Direction = ParameterDirection.Output; //为参数赋值 sqlComm.Parameters["@stuId"].Value = "1234"; //执行 sqlComm.ExecuteNonQuery(); //得到输出参数的值,把赋值给name,注意,这里得到的是object类型的,要进行相应的类型轮换 name = sqlComm.Parameters["@stuName"].Value.ToString(); } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } return name; } }}

 

来自：http://blog.163.com/pengpeng_614/blog/static/17707169200871010859801/