How to use same session on multiple tab of same browser.

Question

Hi,  

 

I want to maintain same session on multiple tab of same browse ,

 

eg:  I want to  use concept of  Gmail  ,     suppose i logged in my gmail account  on one tab  after that if   I open new tab  & login then  it open my same previous Login page  , and if i log out new login or session  that time my  first tab session also logout .

 

so please help how to maintain same session for all tab using asp.net with c#

 

 

Thank u