How to catch the event--closing the IE

OK

Thanks for your help, and I will try your suggestion. There is another way I heard before, it has something to do with the Session, if anyone knows how it is going, please tell me. You can reply here, or send me a mail: [email protected]. Thank you everyone!!

This is the way I do it. Every time the user navigates around the site (clicks a link) I log the time against there login record, and at the same time check the last time all the other users last clicked a link if it was longer than a set time I set there login to false, forcing the logon page if they do try and navigate again.

You never know when user closes his/her IE (or whatever browser). You just CAN NOT know it. All you can do, is write a custom javascript function for onUnload event of the page. (C# doesn't help you here). Here you could load a page that informs you that user closed his browser. Still, you don't know if he switched the power off his computer.