I suspect that it's probably possible to write a module in VB.Net, but having no experience with VB or .NET, I wouldn't know for sure. Unfortunately, I would expect that it would be rather difficult if you don't know how to tell if it's possible, since to my knowledge it has never been done before.

As for example code, some source code is included with modules or available from the auther, other stuff can be had at shellfront.org, but most of it will be in C or C++. I'm pretty sure there isn't any module code available in VB, but I could be wrong.