title: Extending an enum via inheritance
body: <p>I know this rather goes against the idea of enums, but is it possible to extend enums in C#/Java?  I mean "extend" in both the sense of adding new values to an enum, but also in the OO sense of inheriting from an existing enum.  </p>
  
  <p>I assume it's not possible in Java, as it only got them fairly recently (Java 5?).  C# seems more forgiving of people that want to do crazy things, though, so I thought it might be possible some way.  Presumably it could be hacked up via reflection (not that you'd every actually use that method)?</p>
  
  <p>I'm not necessarily interested in implementing any given method, it just provoked my curiosity when it occurred to me :-)</p>