I have created a debugger visualizer in VS2008. There are two classes i\'ve made, in the same .dll :-
Unfortunately this is not possible. There is a limitation in the Debugger Visualizer framework that prevents them from functioning on array types or object.
http://msdn.microsoft.com/en-us/library/e2zc529c.aspx
Quote from the page: "You can write a custom visualizer for an object of any managed class except for Object or Array"