ASP.net Substitution 页面缓存而部分不缓存的实现方法

2024-07-10 13:20:33

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文件1:Deafault.aspx

复制代码代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ outputcache duration="10" varybyparam="none" %>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>
<head runat="server">
<title>Substitution控件实例</title>
</head>
<body>
<form runat="server">

<h1>Substitution控件实例演示</h1>
您好<b>
<asp:substitution methodname="GetUser" runat="Server">
</asp:substitution></b><br>
当前时间[非缓存]：

<b><asp:Substitution runat="server" MethodName="GetTime" /></b>
<br />
缓存: <%=DateTime.Now.ToLongTimeString() %>
<asp:Button runat="server" Text="刷新" />
</form>
</body>
</html>

文件2:Deafault.aspx.cs

复制代码代码如下:

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
{

//下面定义了两个表态方法，可以使用Substitution控件调用，以实现这两个方法每次刷新时都要调用

public static string GetUser(HttpContext context)
{
return context.User.Identity.Name;
}
public static String GetTime(HttpContext context)
{
return DateTime.Now.ToString();
}
}