Opening a new Window from a dying Thread

Question

Hi, I have to following situation: A thread inside my .net application evaluates a result. The thread then finishes, but I want it to show the result in a new window. If I do that, however, the new window disappears again as soon as the thread dies. I've tried to send an event to my main thread which should then open the result window, but nothing is changed, the window still disappears as soon as my thread finishes. Can anyone explain to me how you would do such a thing? Thanks, lucas