I\'ve written a C# application which uses System.Diagnostics.Process class to create a process, using
System.Diagnostics.Process
Process P1 = new Process(); P1.FileName
Process.Close() isn't meant to abort the process - it's just meant to release your "local" view on the process, and associated resources.
I think you mean Process.Kill() or Process.CloseMainWindow(). Personally I'd try to find a more graceful way of shutting it down though.