Call Page Method on Browser Close

Question

I need to call a pagemethod when the user closes the browser or active tabs of a particular ASP.NET 4.5.1 website, tried onbeforeunload, it is working sometimes but not consistent. Can anybody help me on this?

Answer 1

Dealt with this problem long back.

• Sent a form request initially, failed to achieve. Worked 100/1 time.
• Sent a AJAX request. Yup. Good for few times. Again the issue in hands.
• Stopped trusting in browser request and implemented server side inactive methods.
• If no request raised from client for x sec/minutes, closed his session (managed with sessiontimeout , cookies ).
• That's 100% guaranteed and no browser dependencies.

Problems faced with browser trust.

• God knows why sometimes it works.
• Programmers cry when browser crash
• No body knows when CPU shuts down and what happened to my
  browser close request
• And many more natural disasters like this ....

Answer 2

You have to make the request a synchronous AJAX (pretty much the only circumstance in which synchronous AJAX is appropriately used); otherwise, it is a race whether the window will die before it manages to send a request or not.