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Programmatic Fragment Caching

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"  Inherits="ProgrammaticFragmentCaching" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">     <title>Untitled Page</title> </head> <body>     <form id="form1" runat="server">     <div>     <asp:Label runat="server" ID="_timestampLabel" EnableViewState="false" />     <hr />     </div>     </form> </body> </html> File: Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class ProgrammaticFragmentCaching : System.Web.UI.Page {     protected void Page_Load(object sender, EventArgs e)     {         _timestampLabel.Text = "This page generated at " + DateTime.Now.ToLongTimeString();         Response.Cache.SetExpires(DateTime.Now + new TimeSpan(0, 1, 0));     } }