Re: Using Session to Start a Background Process using Ampersand &
WinSCP is not really the right tool for such tasks.
But if you still want to do it, wrapping the command to curly brackets should help:
See How do I run multiple background commands in bash in a single line?
But if you still want to do it, wrapping the command to curly brackets should help:
string cmd = "{ ./go.sh & }";
See How do I run multiple background commands in bash in a single line?