How to determine a thread UI thread

what is the sim开发者_如何学Gople way to know which thread is UI thread or the thread which create a control in a WinForm app?

When I opened window task manager, I found 8 threads for my winform application. So how many of them are UI threads.

generally, how many UI threads created by the winForm engine?

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This may not answer your question since I don't know exactly what you are trying to accomplish but if Control.InvokeRequired is false then you are on the thread that created the control.