.NET wrapping a call/callback pair to appear synchronous -

I have a third party COM object that uses event callback to make the call to indicate that Has finished my work.

  obj.Start ();  

Then after some time, it will raise an incident to say that it is done.

P>

  obj.Start () has tried to use auto reset events to handle; M_autoReset.WaitOne ();  

and in the event handler:

  zero operationfinished () {m_autoReset.Set (); }  

But it seems that the set () and waiton () are both on the same thread, so it gets trapped. Is this an easy way to handle?

There is a quick thought over the top of my head, but it does not appear to be why it is not Does

  Private Readonly Object m_locker = new object (); Private volatile bull m_complete;  

.

  lock (m_locker) {m_complete = false; } Obj.start (); While (true) {bull full lock (m_locker) {full = m_complete; } If (complete) {break; } Thread Sleep (500); // Wait for half-a-second, to see what we have done. YMMV }  

.

  zero operationfinished () {lock (m_locker) {m_complete = true; }}