ASP.NET Tutorial/Cache/ObjectDataSource cache

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Caching with the ObjectDataSource Control

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    protected void srcProducts_Selecting(object sender, ObjectDataSourceSelectingEventArgs e)
    {
        lblMessage.Text = "Selecting data from component";
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Show ObjectDataSource Caching</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:Label
        id="lblMessage"
        EnableViewState="false"
        Runat="server" />
    <br /><br />
    <asp:GridView
        id="grdProducts"
        DataSourceID="srcProducts"
        Runat="server" />
    <asp:ObjectDataSource
        id="srcProducts"
        EnableCaching="true"
        CacheDuration="15"
        TypeName="Product"
        SelectMethod="GetProducts"
        OnSelecting="srcProducts_Selecting"
        Runat="server" />
    </div>
    </form>
</body>
</html>
File: Product.cs
using System;
using System.Data;
using System.Data.SqlClient;
using System.Web.Configuration;
public class Product
{
    public static DataTable GetProducts()
    {
        string conString = WebConfigurationManager.ConnectionStrings["Products"]. ConnectionString;
        SqlDataAdapter dad = new SqlDataAdapter("SELECT Title,Director FROM Products", conString);
        DataTable products = new DataTable();
        dad.Fill(products);
        return products;
    }
}