How to run server side function when user close the browser (not refresh)?

Question

0.00/5 (No votes)

See more:

Hi,everyBody

I want to run a server side function when user close the browser. (not refresh it)
I try unload and beforUnload events But these events also fire when the page refreshed.
So I can not use these events, I want run the function JUST when user CLOSE the browser.
Or how can I predict is browser close or refresh fired
In fact I want to write a code that when a user log in to my website another user with same username can not log in until the first user log out.
So when first user log in I check my data base and after he/she log in I update the a table So nobody can log in until the user log out that I update the table again.

Also I can not use cookies because user can delete them!

anybody can help me?

Posted 25-Aug-11 2:57am

ssiirroouuss

Updated 25-Aug-11 5:00am

v4

Add a Solution

5 solutions

Solution 1

you can use the onbeforeunload event to run a javascript which tells your server that the user closed the website.

HTML

<body onbeforeunload="alert('User is closing my website :'(');">

To communicate with your server via javascript see Call Server Side Code by JavaScript using Ajax.NET Framework[^]

Posted 25-Aug-11 3:08am

Simon Bang Terkildsen

Updated 25-Aug-11 3:09am

v2

Comments

TheyCallMeMrJames 25-Aug-11 9:13am

Isn't that going to kill them when they click the back button? A link?

Simon Bang Terkildsen 25-Aug-11 9:16am

kill them in what sense?

koolprasad2003 25-Aug-11 9:23am

onbeforeunload get called even when u click "refresh".
so u can't directly predict is browser closed or refesh fired.

Simon Bang Terkildsen 25-Aug-11 9:24am

very true, didn't consider refresh

koolprasad2003 25-Aug-11 10:07am

check my reply. this event will fire only when browser closed

ssiirroouuss 25-Aug-11 10:43am

thanks for your reply
But your solution also fire when user refresh the page

Solution 3

you have to take help of javascript, call following function on
onbeforeunload()

C#

function handleWindowClose()
         {
            if ((window.event.clientX < 0) || (window.event.clientY < 0)) {
                event.returnValue = "Browser Closed";
            }
        }

then after call AJAX to execute code behind method.

Posted 25-Aug-11 3:20am

koolprasad2003

Updated 25-Aug-11 3:21am

v2

Solution 4

I might have it even way easier than you

JavaScript

var isClose = false;
//this code will handle the F5 or Ctrl+F5 key+
//need to handle more cases like ctrl+R whose codes are not listed here
document.onkeydown = checkKeycode
window.onbeforeunload = doUnload;
function checkKeycode(e)
{
    var keycode;
    if (window.event)
        keycode = window.event.keyCode;
    else if (e)
        keycode = e.which;
    if(keycode == 116)
    {
        isClose = true;
    }
}

function somefunction()
{
    isClose = true;
}

function doUnload()
{
    if(!isClose)
    {
        window.location = "LogOut.aspx"
    }
}

Just add on the body tag

JavaScript

onmousedown="somefunction()"

This will launch the "LogOut.aspx" page whenever the window or the tab is closed, then you can have there that server side code you need. If you need to pass some data to the page, use the Session variable to handle the data.

Now, if you have many pages, and you need to launch that function from either page is opened, you i'll need to post this code in each page, reason why i suggest using a master page, and only put this code there

Posted 6-Sep-11 6:12am

CJLopez

Comments

Maidam santhosh 22-Jul-13 6:56am

This is Working In only FireFox... pls suggest me.. i want work in all browsers.

Solution 5

Perhaps you could write a solution in Node.js? Have a node.js server that listens for all incoming "logins". Then on your site, you have a client-listener that accepts requests with a given userID. IF that user-id is logging in from another source, you can have the node.js client log the user out from the first log in souce.

Posted 6-Sep-11 6:33am

John Y.

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

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

TheyCallMeMrJames · Accepted Answer · 2011-08-25T03:11:00

I don't believe that I've ever seen a cross-browser version of something that works.

The best bet is to create a login cookie that expires when the browser closes. When the user hits this site - even if they are 'logged in' - and the cookie doesn't exist, you can force the logout.

Also, make it painfully obvious to users that they should log out, and if it's that important, make it easy to find.

Cheers.