.net 4.0 - Wait for Handle to be set when using Process.Start -

i'm using process.start start console app app. after it's started want use p/invoke set title of window.

my problem after starting process mainwindowhandle 0. if wait bit handle gets set.

i know use waitforidleinput if wasn't console app, do if is?

my fall sleep, or loop waits until mainwindowhandle set, there better way?