C# tunneling

Hi, I'm using winscp.dll to sftp sync.

There is posible to make a tunneling or port forwading with DLL and C# also?

best regards

Yes. The easiest is to setup the tunnel in WinSCP GUI:
https://winscp.net/eng/docs/ui_login_tunnel
And have the GUI generate a code template for you:
https://winscp.net/eng/docs/ui_generateurl#code