How to capture and store network packets using C#?

I am sorry if the question seems vague. However, I am interested in this project which I found in the link below

http://ift.tt/1GVe5kx.

If I am correct, I think this application captures and stores the network packets into a SQL database. But I am not sure, if I can capture it using C#

I would love an explanation because this is an awesome project and I know it would be a good challenge for me

Thanks All