true if the operation succeeds; otherwise, false.
Starting with the dnprdnext and the compact_v35_long, this member is inherited from System.Threading.EventWaitHandle. See EventWaitHandle.Set.
The AutoResetEvent.Set method releases a single thread. If there are no waiting threads, the wait handle remains signaled until a thread attempts to wait on it, or until its EventWaitHandle.Reset method is called.
There is no guarantee that every call to the AutoResetEvent.Set method will release a thread. If two calls are too close together, so that the second call occurs before a thread has been released, only one thread is released — as if the second call did not happen. Also, if the AutoResetEvent.Set method is called when there are no threads waiting and the System.Threading.AutoResetEvent is already signaled, the call has no effect.