Please correct me if I'm wrong, but I've found little to absolutely no ASP.net support when it comes to Bitcoin.  Now, I will say that I haven't really been looking so I could have easily overlooked that fact. Back to the point, IMO the OP will probably find a smoother road to success going with a Bitcoin-friendly platform/framework/language like PHP and/or Python (I don't think C/C++ is part of this debate) based on an open-source hardware infrastructure.  Things in the Bitcoin world ARE moving rapidly and I don't see it being easy relying on MSFT forums and support channels to get answers to your (Bitcoin security related) questions.