.NET Is there a way to get the parent thread id?

Question

Suppose the main thread is spawning a new thread t1, how can my code that runs on t1 find the thread id of the main thread (using c#)?

Edit:
I don\'t control the

Answer 1

I don't know if you have a property to do that, but you could add a new parameter to your thread an pass to it. It would be the easiest way I could think of...