How to determine a user logout in asp.net c#?

Question

I have to maintain the user login and logout time in database. For login its easy but for logout , if I use Application_End () in global.asax for logging. It gives me exception.

My Code in asax file:

Application_End()
{
  HttpCurrent.Context.Session.Abandon();
  LogUserLogoutTimeToDatabase();
}

Answer 1

You will need to use Session_End(). A user can simply close their browser, and to them, they are now "logged off" - but nothing has alerted the server that they have logged off unless they clicked a "log off" button before closing their browser. So, once their session times out, the Session_End() event will be triggered and you can capture your logout in there.

Answer 2

You're best and first bet would be a logout button in the application. After that you can use a Session timeout event with a very short session time.

Application_End is triggered when the application is shutting down but not during a server crash.

Answer 3

the best way to achieve this is , use onClick event of logout button.

when user click on log out button , store that time in database...