c# - How to determine which network adapter is connected to the internet

Question

I'm writing a program in C# that needs to monitor the amount of internet bandwidth currently in use so it can do a background upload when the internet usage is low. How can I automatically determine which network adapter is the one connected to the internet?

Answer 1

I ended up following a link to MSDN when I was reading this page where I found the GetBestInterface function. I was able to use that to find the adapter thats connected to the internet