title: Is there a way to tell which Tasks are currently running in Task Parallel Library?
body: <p>I can't see a way to see which tasks are running. There is the Task.Current property, but what if there are multiple tasks running? Is there a way to get this kind of information?</p>
  
  <p>Alternately, is there a built in way to get notified when a task starts or completes?</p>