c# 4.0 - Log out existing user when current user login asp.net mvc c# -


i have mvc web application.

example:

in tab1, logged in user1 , doing operations , in tab2, logging in user2, ask pop override, clicked yes , sucessfully logged in now.

question when goto tab1, if hit refresh(f5) or save button in page..
refresh - displays user2 logged default session unique happen if click save button , dont want save user1's data user2 instead wanted user1 logged out popping "user2 active user1 logged out"?

you cant because browser entertain unique session, if user1 logged in session created particular browser if logged in other user in other tab session created , forgot previous session. instead can this,

 if (session["username"] == null)                 {                      return view();                 }                 else                 {                      return redirecttoaction("index", "home");                 }

by 1 user can loggedin


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