Task.WaitAll and Exceptions

Question

I have a problem with exception handling and parallel tasks.

The code shown below starts 2 tasks and waits for them to finish. My problem is, that in case a task thr

Answer 1

Here's how I solved the problem, as alluded to in the comments on my answer/question (above):

The caller catches any exceptions raised by the tasks being coordinated by the barrier, and signals the other tasks with a forced cancellation:

CancellationTokenSource cancelSignal = new CancellationTokenSource();
try
{
    // do work
    List workerTasks = new List();
    foreach (Worker w in someArray)
    {
        workerTasks.Add(w.DoAsyncWork(cancelSignal.Token);
    }
    while (!Task.WaitAll(workerTasks.ToArray(), 100, cancelSignal.Token)) ;

 }
 catch (Exception)
 {
     cancelSignal.Cancel();
     throw;
 }