I just want to find a straightforward, C# class that takes in a starting latitude and longitude and a distance and finds the bounding box (max lat, min lat, max lon, min lon
I know I'm resurrecting a two year old question, but in the event that anyone gets here from Google, I've written a C# class library that does exactly this and a little more. I've created a Github repository to host the code and will be writing a blog post covering it shortly.
Geolocation repository