asp.net调用接收存储过程返回值

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

public partial class _Default : System.Web.UI.Page
{
//数据库连接字符串
private string sqlCon = ConfigurationManager.ConnectionStrings["conStr"].ToString();

protected void Page_Load(object sender, EventArgs e)
{

}

/// <summary>
/// 获取存储过程return的返回值
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btn_return_Click(object sender, EventArgs e)
{
using (SqlConnection con = new SqlConnection(sqlCon))
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
try
{
SqlCommand cmd = new SqlCommand("pro_test3", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@id", "1");
cmd.Parameters.AddWithValue("@ipcount", "100");
cmd.Parameters.Add("@return", SqlDbType.Int);
cmd.Parameters["@return"].Direction = ParameterDirection.ReturnValue;
cmd.ExecuteNonQuery();
lb_return.Text = cmd.Parameters["@return"].Value.ToString();
}
catch (Exception ex)
{
//出错信息显示
lb_return.Text = ex.ToString();
}
}
//对应的存储过程
//create procedure pro_test1(
//@id int,@ipcount int)
//as
//SET NOCOUNT ON
//update LogTB set IPCount=@ipcount where Id=@id
//if @@error <> 0
//    return -1
//else
//    return 1
//go
}

/// <summary>
/// 获取存储过程output的返回值
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btn_output_Click(object sender, EventArgs e)
{
using (SqlConnection con = new SqlConnection(sqlCon))
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
try
{
SqlCommand cmd = new SqlCommand("pro_test3", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@id", "1");
cmd.Parameters.AddWithValue("@ipcount", "100");
cmd.Parameters.AddWithValue("@flag", "0");
cmd.Parameters["@flag"].Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();
lb_return.Text = cmd.Parameters["@flag"].Value.ToString();
}
catch (Exception ex)
{
//出错信息显示
lb_return.Text = ex.ToString();
}
}
//对应的存储过程
//create procedure pro_test2(
//@id int,@ipcount int,@flag int output)
//as
//SET NOCOUNT ON
//update LogTB set IPCount=@ipcount where Id=@id
//if @@error <> 0
//    set @flag = -1
//else
//    set @flag = 1
//go
}

/// <summary>
/// 获取存储过程返回的数据集
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btn_dataset_Click(object sender, EventArgs e)
{
using (SqlConnection con = new SqlConnection(sqlCon))
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
try
{
SqlCommand cmd = new SqlCommand("pro_test3", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@id","1");
using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
{
DataTable dt = new DataTable();
sda.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
catch (Exception ex)
{
//出错信息显示
lb_return.Text = ex.ToString();
}
}
//对应的存储过程
//create procedure pro_test3(
//@id int)
//as
//SET NOCOUNT ON
//select Id,IPCount from LogTB where Id=@id
//go
}
}