how to update database onunload browser

Feb 26 2013 5:22 AM

Hi..
I am working on asp.net using c# visual studio 2010..
I have a member panel in which members login timely and again with there user name and password. on login of every user i have maintained login status of that user in database as like into status=1
but if user close browser than i want to change user status to 0 as like status=0.
how it is possible
please help me