The WURFL team has introduced a new .NET API. The first pass does not have a Nuget package but they are working on it. So it should eventually show up on Nuget.
The WURLF .NET API is different from my earlier post. It made to dynamically create your views based on the browser capabilities. This approach is different from 51 Degrees implementation. In 51 Degrees you can simply redirect your pages to a specific sub site rather than changing your view on the fly. You can also change the view on the fly if you like with 51 Degrees.
Either implementation will get you to where you want to be. It is great to see the WURFL project expand the their reach past Java and PHP. They include bothe WebForm and MVC examples.