How to handle the close(X) event of a browser

Hi,
I am developing a web application using asp.net. I want to handle the close(X) event of the browser and want to do some database updation before closing the browser. How can i do this?

regards
sudhir
sudhir_araoAsked:
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ZylochConnect With a Mentor Commented:
Hi sudhir_arao,

Use Javascript onunload in the <body> tag. Have it call __doPostBack (not sure since not too good with ASP, but heard of it)

Regards,
Zyloch
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snavebelacConnect With a Mentor Commented:
It is very difficulty to trap the closing of a browser as there is no specific event associated with it.  The onUnload event will trigger when a user closes the browser, refreshes, clicks the back button or goes to another page.  There is no way of knowing which has been carried out.

The only way to know when a user has stopped using your web page is via the 'Session_OnEnd' either via a logout of some sort or a timeout on the server.

I am not familiar with ASP.NET but with ASP the global.asp file holds the Session_OnEnd event which will trigger code at the server when a user logouts (associated with the session.adandon function in ASP) or when the session times out (default 20 mins).

HTH

C
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ZylochCommented:
Ah yes, use onclose for Mozilla, for IE, here's an implementation: http://experts-exchange.com/Web/Web_Languages/JavaScript/Q_20926025.html

Regards...
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