Keep SSH Tunnel Alive/Running

Hi I'm trying to setup a simple SSH Tunnel client software with dynamic port forwarding.

I'm doing it in VB.net

But I'm unable to keep the SSH Tunnel alive, it disconnects as soon as the procedure/function runs, i want to keep it running and use it a browser on my PC as proxy, how can i achieve it ?

I don't want the SSH Tunnel to disconnect till i want to disconnect it

Thanks