Arduino Networking internet

Hello guys , i would like to communicate a arduino to a pc from internet..but all i can find on the web is exemple to make http request on a web server. I want to to send byte to a PC with a C# server, and the C# server will catch up the data.. how can i do that?

Exactly the same way. You specify the IP address and port number to connect to. You use client.write() to send a byte.

Look at the TelnetClient example, for example.