Documentation tool for .NET applications

Question

I have an ASP.NET 2.0 application, developed in the early days of 2.0. There are almost no comment tags in the application. Is there any tool which can grab all the classes from that application and generate a report [in CHM or HTML or PDF] with all the classes and belonging methods, hierarchy of the classes, and any kind of visual presentation of the overall flow/relationship/architecture?

Answer 1

Sandcastle can do this. In fact, pretty much any documentation-generation tool will do it.

Answer 2

Doxygen works nice on C# code.