Is there any way to finds out if i currently using wifi or gprs data plan?

Hello,
I need your help regarding Internet connectivity, right now i am using connectivity plugin for checking internet connection if its available or not but i also want to know that am i using wifi or gprs data because if i am conecting to wifi then i need to upload back-up data to my server but looks like i can not found proper solution or nuget package to do that.
Any help would be appreciate.
Thank you....