No. In fact to do this using the thread pool is harder.

Just join each one.

for each t as Thread in myThreads
 t.Join()
next

Yes.

David

Have you initiated all the other threads from the Main method with a STA
model?

What you are asking for is an asynchronus operation because you are
expecting a notification from the called function or thread. This can be
achieved by obtaining a WaitHandle from an IAsyncResult object. The
IAsyncResult object will provide for methods like WaitOne or WaitAll
methods that wait till all the BeginInvoke-d methods have finished their
operations. You can also use the EndInvoke method on the IAsyncResult
object to get the same result.

with regards,

J.V.Ravichandran

at end of your thread class,define your own FinishedEvent,if it
finished,Raise an event .
'nd handle the event.

for example,you hanve 100 threads , u can do it:

private static int countFinished = 0;

for(int i=0;i<100;i++){
   // thread init
   // ...
   myThread[i].Finished += new EventHandler(OnFinished);
}

private void OnFinished(object sender, EventArgs e){
   countFinished ++;
   if(100 == countFinished){
       MessageBox.Show("All threads stopped!");
   }
}