退出页面时清空全部或指定Session变量

来源：互联网发布：windows系统官网编辑：程序博客网时间：2024/05/03 08:17

1、HTML代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

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

g_blnCheckUnload = true;

function RunOnBeforeUnload()

{

if(g_blnCheckUnload)//或者if(g_blnCheckUnload==true)

{

window.event.returnValue ="You will lose any unsaved content";

//"You will lose any unsaved content"为该事件的返回值

<%Session.Remove("f");%>

//<%Session.RemoveAll();%>

}

//session.removeattribute("f");

//session.removevalue("f");

}

function bypassCheck()

{

g_blnCheckUnload = false;

}

</script>

</head>

<div>

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" OnClientClick="bypassCheck()" Text="Button" /></div>

</form>

</body>

</html>

2、C#代码

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)

{

Session["f"] ="f";

}

protected void Button1_Click(object sender, EventArgs e)

{

//Response.Write("<script language=javascript>window.open('Default2.aspx');</scirpt>");

Response.Write("<script language=javascript>window.open('Default2.aspx','_blank');</script>");

}