Using Post-Cache Substitution : Post Cache « Cache « ASP.NET Tutorial
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- Cache
- Post Cache
The MethodName property accepts the name of a method defined in the page.
The method must be a shared (static) method because an instance of the class is not created when the page is output cached.
<%@ Page Language="C#" %>
<%@ OutputCache Duration="15" VaryByParam="none" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
public static string GetTime(HttpContext context)
{
return DateTime.Now.ToString("T");
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Substitution Control</title>
</head>
<body>
<form id="form1" runat="server">
<div>
The cached time is: <%= DateTime.Now.ToString("T") %>
<hr />
The substitution time is:
<asp:Substitution
id="Substitution1"
MethodName="GetTime"
Runat="server" />
</div>
</form>
</body>
</html>