Start a new process and Killing the current process

Question

I want to start a new process B.exe from the current executing process A.exe.

And as soon as B.exe is launched I want to kill A.exe (the current executing process).<

Answer 1

Why do you want to close A from B while A cat start B and then close by itself?

Process.Start("A.exe");
Process.GetCurrentProcess().Kill(); // or Application.Exit(); or anything else