Материал из .Net Framework эксперт
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HttpResponseSubstitutionCallback
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="Default" %>
<%@ OutputCache Duration="5" VaryByParam = "none" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
</form>
</body>
</html>
File: Default.aspx.vb
Partial Class Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) _
Handles Me.Load
Response.Write("Current (cached) Time is :" & Now)
Response.Write("<br/>")
Response.WriteSubstitution(New HttpResponseSubstitutionCallback(AddressOf getServerTime))
End Sub
Public Shared Function getServerTime(ByVal context As System.Web.HttpContext) _
As String
Return "Current Time is :" & Now.ToString
End Function
End Class
