Forms Authentication and Role based Authorization: A Quicker, Simpler, and Correct Approach

http://www.codeproject.com/Articles/36836/Forms-Authentication-and-Role-based-Authorization

The code has been modularized to make it easier to use from a utility class
compared with this one
http://www.codeproject.com/Articles/2905/Role-based-Security-with-Forms-Authentication

(For WEBA students, please follow the more updated example in the first link)