asp.net文本记数器(C#)

王朝asp·作者佚名 2006-01-09

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global.asa必须放在网站根目录里

global.asa

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void Session_OnStart(){

Application.Lock();

Application["whoson"]=Convert.ToInt32(Application["whoson"])+1;

Application.UnLock();

}

void Session_OnEnd(){

Application.Lock();

Application["whoson"]=Convert.ToInt32(Application["whoson"])-1;

Application.UnLock();

}

public void Application_OnStart(){

Application.Lock();

Application["whoson"]=0;

Application.UnLock();

}

</script>

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count_txt.asp

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<%@ Page language="C#"%>

<%@ Import Namespace="System.IO"%>

public void Page_Load(Object src,EventArgs e)

{

//以下为读取文件,当前目录必须有count.txt这个文件否则会出错

StreamReader sr=File.OpenText(Server.MapPath(".")+"\count.txt");

Application.Lock();

Application["count"]=sr.ReadLine();

Application["count"]=Convert.ToInt32(Application["count"])+1;

Application.UnLock();

sr.Close();

//建立文件

StreamWriter rw=File.CreateText(Server.MapPath(".")+"\count.txt");

Application.Lock();

rw.WriteLine(Application["count"]);

Application.UnLock();

rw.Flush(); //写入

rw.Close();

count_1.Text="您是本站第"+Application["count"].ToString()+"位访问者";

}

</Script>

<html>

<head>

</head>

<body>

<hr>

<asp:Label ID="count_1" runat="server"/>

</body>

</html>