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Using the substitution control (C#)

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs"  Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <%@ OutputCache Duration="30" VaryByParam="None" %> <html xmlns="http://www.w3.org/1999/xhtml" > <head>     <title>Substitution Control</title> </head> <body>     <form id="form1" runat="server">     <div>         <asp:Label ID="Label1" Runat="server" Text="Label"></asp:Label>         <br />         <asp:Substitution ID="Substitution1" Runat="server"              methodName="GetUpdatedTime" />         <br />     </div>     </form> </body> </html> File: Default.aspx.cs using System; using System.Data; using System.Configuration; 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 _Default : System.Web.UI.Page  {     public static string GetUpdatedTime(HttpContext context)     {         return DateTime.Now.ToLongTimeString() + " by " +                 context.User.Identity.Name;     }     protected void Page_Load(object sender, EventArgs e)     {         Label1.Text = DateTime.Now.ToLongTimeString();     } }