How do I get certain code to execute before every single controller action in ASP.NET MVC 2?

Question

I want to check some things about the state of the session, the user agent, etc, and possibly take action and return a special view BEFORE a controller method gets a chance

Answer 1

One way you can do this is to redirect to a different ActionMethod to show the view. Code example is in this discussion:

Redirecting to specified controller and action in asp.net mvc action filter