title: how to catch session end when press title bar close button asp.net c#
body: <p>I have some question about asp.net web application.
  Web application which use sql server session state.
  Logout event can session remove but press title bar close button want to remove session.
  Which events can control when press title bar close button.
  I read about session_end event can catch when press title bar close button.
  But can't arise session_end event using sql server session state.
  How can to catch?</p>