There is absolutely no way to guarantee that this will work. Its better to
do work associated with a user leaving the webpage in the session_end event
handler of global.asax.
Oh yea, there is definately no way to guarantee that you will catch
this event.
What if the browser crashs? What if the person has javascript turned
off?
What I meant is that doing the AJAX method is the only way you can even
try to get this event. How often will it work? 70-80-90%? Who knows.
But if it something that you NEED 100% on, then you are out of luck.
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