How to tell if a thread is the main thread in C#

Question

I know there are other posts that say you can create a control and then check the InvokeRequired property to see if the current thread is the main thread or not

Answer 1

If you're using Windows Forms or WPF, you can check to see if SynchronizationContext.Current is not null.

The main thread will get a valid SynchronizationContext set to the current context upon startup in Windows Forms and WPF.