MSSQL - 存储过程Return返回值
1、存储过程中不使用外部参数。
存储过程:
SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO -- ============================================= -- Author: HF_Ultrastrong -- Create date: 2015年7月19日22:09:24 -- Description: 判断是否有数据,并使用Return返回值 -- ============================================= CREATE PROCEDURE ReturnValue AS BEGIN if exists(select * from Tb_Category) return 100 else return -100 END
代码:
/// <summary>
/// 点击显示参数
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"].ToString());
SqlCommand cmd = new SqlCommand("ReturnValue", con);
cmd.CommandType = CommandType.StoredProcedure;
//声明参数接收存储过程返回值
SqlParameter returnValue = cmd.Parameters.Add("returnValue", SqlDbType.Int, 4);
returnValue.Direction = ParameterDirection.ReturnValue;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
this.Label1.Text = Convert.ToString(returnValue.Value);
}
最终效果:

2、存储过程中使用外部参数。
存储过程:
SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO -- ============================================= -- Author: HF_Ultrastrong -- Create date: 2015年7月19日22:09:24 -- Description: 判断是否有数据,并使用Return返回值 -- ============================================= CREATE PROCEDURE ReturnValue @10 int, @20 int, @30 int AS BEGIN if exists(select * from Tb_Category) return 100 else return -100 END
代码:
/// <summary>
/// 点击显示参数
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"].ToString());
SqlCommand cmd = new SqlCommand("ReturnValue", con);
cmd.CommandType = CommandType.StoredProcedure;
//参数数组
SqlParameter[] para = new SqlParameter[]
{
new SqlParameter("@10", 10),
new SqlParameter("@20", 20),
new SqlParameter("@30", 30),
new SqlParameter("@Return", SqlDbType.Int)
};
cmd.Parameters.AddRange(para);
para[para.Length - 1].Direction = ParameterDirection.ReturnValue;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
object obj = para[para.Length - 1].Value;
this.Label1.Text = Convert.ToString(obj);
}
最终效果:

详细讲解:http://www.cnblogs.com/zhangweijia/archive/2013/02/04/2892054.html
posted on 2015-07-19 22:17 ultrastrong 阅读(1081) 评论(0) 收藏 举报
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