Application 简介绍与计数器实例

利用application 做简单计数器

<%@ page language="c#" %>
"http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

http://www.w3.org/1999/xhtml" >

   


   

锁定application

<%@ page language="c#" autoeventwireup="true"  codefile="default.aspx.cs" inherits="_default" %>

http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

http://www.w3.org/1999/xhtml" >

   


   

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
{
    protected void page_load(object sender, eventargs e)
    {
        if (application["pagecounter"] != null &&
            (int)application["pagecounter"] >= 10)
        {
            application.remove("pagecounter");
        }

        if (application["pagecounter"] == null)
        {
            application["pagecounter"] = 1;
        }
        else
        {
            application.lock();
            application["pagecounter"] =
                (int)application["pagecounter"] + 1;
            application.unlock();
        }
        mylabel.text = convert.tostring(application["pagecounter"]);
    }
}