How to end user session when browser closed

M.Farrukh Abbas

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8 Feb 2011CPOL

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There is no fool-proof technique to catch the browser close event for 100% of time. The trouble lies in the stateless nature of HTTP. I will explain one of them which is very effective and tested

Introduction

How to capture logoff time when user closes browser?

How to end user session when browser closed?

How to end user session when user redirects to another site?

These are some of the frequently asked questions. Normally this is the requirement of any application. There is no fool-proof technique to catch the browser close event for 100% of the time. The trouble lies in the stateless nature of HTTP. I am explaining one of them which is very effective and tested.

I updated the article and now it support all kind of browser .

Using the Code

1. First create a page LogOut.aspx and in Page_Load event, write this code:

ASP.NET

protected void Page_Load(object sender, EventArgs e)
{  
  Session.Abandon();
}

2. Then add the following JavaScript code in your page or Master Page:

ASP.NET

<script type="text/javascript">
 
var clicked = false;  
 function CheckBrowser()  
   {      
      if (clicked == false)   
         {      
          //Browser closed   
         }        else  
          {  
          //redirected
             clicked = false; 
           } 
   }  
  function bodyUnload() 
   {      
      if (clicked == false)//browser is closed  
          {   
         var request = GetRequest();  
           request.open  ("POST", "../LogOut.aspx", false);    
       request.send();    
        } 
   } 
 
   function GetRequest()  
     {       
     var xmlhttp;
        if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
            xmlhttp = new XMLHttpRequest();
        }
        else {// code for IE6, IE5
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        return xmlhttp;
      } 
 
</script>

3. Add the following code in the body tag of master page:

ASP.NET

<body onunload="bodyUnload();" Onclick="clicked=true;">

Finally the code in Master page like this:

JavaScript

<script language="javascript" type="text/javascript">
    //<![CDATA[</span />

    var clicked = false;
    function CheckBrowser() {
        if (clicked == false) {
            //Browser closed
        }
        else {
            //redirected 
            clicked = false;
        }
    }

    function bodyUnload() {

        if (clicked == false)//browser is closed
        {
            var request = GetRequest();

            request.open("POST", "../LogOut.aspx", false);
            request.send();
            alert('This is close');
        }
    }
    function GetRequest() {
        var xmlhttp;
        if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
            xmlhttp = new XMLHttpRequest();
        }
        else {// code for IE6, IE5
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        return xmlhttp;
} 
</script>

<body onunload="bodyUnload();" onclick="clicked=true;"><span style="font-size: 9pt;">  </span>

JavaScript

<form id="form1" runat="server">

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

M.Farrukh Abbas

Web Developer

Pakistan

I have worked on number of technologies including C# .Net, VB .Net, ASP.Net, LINQ, WCF, X++, and SharePoint,Oracle,Crystal Reports.

http://dotnetfarrukhabbas.blogspot.com

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How to end user session when browser closed

Introduction

Using the Code

License

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