Dispatcher.Join
Method
Visual Basic
Public Sub Join()
C#
public void Join();
Purpose
Wait for a dispatcher thread to finish.
Remarks
The calling thread blocks until after the dispatcher thread is destroyed.
Consider a program in which the main thread creates a queue and listeners, and then creates a dispatcher for that queue. After that, the main thread is inactive. However, if the main thread exits, the scope for its queue and listeners evaporates (and those objects evaporate too) so the program can no longer operate correctly. To prevent this situation, the main thread calls this method, indicating a dependency between the two threads.