Is there a way to keep a page from rendering once a person has logged out but hit the “back” button?

Question

I have some website which requires a logon and shows sensitive information.

The person goes to the page, is prompted to log in, then gets to see the information.

Answer 1

From aspdev.org:

Add the following line on top of the Page_Load event handler and your ASP.NET page will not be cached in the users browsers:

Response.Cache.SetCacheability(HttpCacheability.NoCache)

Settings this property ensures that if the user hits the back-button the content will be gone, and if he presses "refresh" he will be redirected to the login-page.