C# : how to track Upload and Download Baytes?

i want to make a small windows app that start 开发者_StackOverflowevery windows startup this app can track downloads and uploads bytes daily , so how to do that using c# .

i am new to c#

Edit : download and upload bytes are what i upload to the internet and download from the internet using any internet connection , they are the same as sent and receive bytes in connection status window

thanks

You may look into the following for network related stuffs in .NET
http://nayyeri.net/how-to-calculate-network-utilization-in-net

Hope it helps!