[vadhiya]

i m new for session state.

Here's what I am trying to achieve. means i want to do this,
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User logs in to my web app (using forms auth.)...session begins...as long as user is using the app, no login/session timeout occurs...if user is inactive for 30 min. or hits 'logout' link, the session and login are terminated.
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presently in my app.
after, logout.....
it will come login page.
now,if i press browser's backbutton
i will open previous page of app., even i already logout.

but, i want do this, but i don't know how,
after, logout.....
it will come login page.
now,if i press browser's backbutton
it does force me to re-login.

how can i do this?
i know to do this through session state.
but how, i don't know.

plz give any idea in details with code.
it's urgent.

thanks in advance.