How to implement TOTP C / S (One Time Password Client / Server) in C #?

I want to create a client / server application using C # and my application needs to be able to handle time one-time passwords, which means my server can authenticate the client after write (TOTP).

I've searched across the internet for any example that might be close to something similar or subject, but couldn't find anything at all.

Do you have an idea for a TOTP implementation, even if my situation is not the same as mine here, I just need someone to give me some hints.