How can I know some user is online or offline in vb.net using asp.net

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Hi,

I want to know that any user is login on my site.

How can I know he is online or offline in any moment?

I know very well if he click on sign out button then I know that he is offline.

But he does not click on sign out button and he close the browser directly with cross (X) button or his internet connection is lost in that moment, then how can I know about online or offline details ?

Plz if any one have answer on this question. Share me ....

Posted 20-Jul-14 8:59am

SUJEET KR SINGH

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Kornfeld Eliyahu Peter · Answer 1 · 2014-07-20T09:04:00

Solution 1

Because of the disconnected nature of the web there is no way to ensure that server will know at all time if client closed window.
But! this article gives you some solution that will work in most cases: How to end user session when browser closed[^]

Posted 20-Jul-14 9:04am

Kornfeld Eliyahu Peter