I needed a simple, lightweight messaging framework for a project I was on recently, and NSQ fit the bill. Fortunately, Jud White has a great .Net solution in place, I just needed to play with it and make sure it would work in my scenario. This is the sample app I created. You are welcome to fork it, improve it, download it, etc.
Credit for NSQSharp goes to https://github.com/judwhite/NsqSharp
Credit for NSQ goes to https://github.com/nsqio/nsq