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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;
}
}
