title: How to prevent subclass deriving from framework base class
body: <p>Writing MVC application and found this technique to be useful:
  <a href="http://forums.asp.net/post/4960505.aspx" rel="nofollow">http://forums.asp.net/post/4960505.aspx</a>
  which basically puts a class-in-the-middle that overrides an event handler method for execution when any correctly derived Controller subclass Action is requested.</p>
  
  <p>Is there a way I can force all not yet written Controllers in the project/solution to derive from the intended subclass-in-the-middle and/or to not be able to derive from the framework base class?</p>