How to disable browser back button in asp.net

Refer here

http://www.aspsnippets.com/Articles/Disable-Browser-Back-Button-Functionality-using-JavaScript-in-ASP.Net.aspx

Sir,

That is not working for me.. I am using master page and i have written the javascript in the content place holder..

Put it in the content placeholder of the page and not master page

If you have 2 pages pageA and pageB and user goes from pageA -> pageB and you want to stop him from coming back to pageA put the script in content place holder of pageA

Sir,

When user clicks on logout its a link to another page logout.aspx where i write the session.abandon() at page load event of logout.aspx.. After which user is redirected to home.aspx... If user is in customer.aspx and clicks on logout customer.aspx>logout.aspx>home.aspx... Now where do i write the javascript? Should i write in logout.aspx page?

Yes. Write the script on the page where you don't want user to go back using browser back button. In your case it is logout page