//ReturnParameterExample.aspx
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void SqlDataSource1_Selected(object sender, System.Web.UI.WebControls.SqlDataSourceStatusEventArgs e) {
foreach(SqlParameter myParam in e.Command.Parameters)
{
Label1.Text += myParam.ParameterName.ToString();
Label1.Text += ": ";
Label1.Text += myParam.Value;
Label1.Text += "<br />";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>asp.net Stored Procedure and Return Parameter example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:Red">Return Parameter Example</h2>
<asp:Label ID="Label1" runat="server" Font-Size="Large" ForeColor="DodgerBlue">
</asp:Label>
<br />
<asp:SqlDataSource
ID="SqlDataSource1"
runat="server"
ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="GetProducts"
SelectCommandType="StoredProcedure"
OnSelected="SqlDataSource1_Selected"
>
<SelectParameters>
<asp:Parameter Name="TotalProducts" Type="Int32" Direction="ReturnValue" />
</SelectParameters>
</asp:SqlDataSource>
<asp:GridView
ID="GridView1"
runat="server"
DataSourceID="SqlDataSource1"
AllowPaging="true"
DataKeyNames="ProductID"
BackColor="Crimson"
ForeColor="AntiqueWhite"
BorderColor="LightPink"
HeaderStyle-BackColor="DarkOrange"
GridLines="Horizontal"
Font-Italic="true"
>
</asp:GridView>
</div>
</form>
</body>
</html>
GetProducts [Stored Procedure]
CREATE PROCEDURE [dbo].[GetProducts] AS
SELECT ProductID, ProductName, UnitPrice FROM Products
DECLARE @CountProducts smallint
SELECT @CountProducts = Count(ProductID) FROM Products
RETURN @CountProducts
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