I am also interested in this question. Can anyone recommend a tool to produce C# from a UML diagram?

Rafael:

I don't know about you, but as a developer (for over 20 years) I have found UML to be pretty useless. When I think in terms of architectures, object models, and code, I just don't have UML diagrams in my head.

I have worked on many projects (private business, public companies, state agencies, internet start-ups, etc), and NOWHERE have I seen any use for UML or anyone benefiting from it. Now that I think about it, I have never seen a single developer review or use a UML diagram. Of course, I have seen thousands of diagrams being drawn with boxes and lines (arrows) connecting them, but not 'proper' UML diagrams. 

Of course, this is my personal experience. I would be happy to hear other developer's experiences.

Jacob.