ASP.Net/Development/Callback
HttpResponseSubstitutionCallback
<source lang="csharp">
<%@ 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">
</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("
")
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
</source>
