How can I await Task.WhenAll( ... ).ContinueWith( AnotherAwaitable )?

Question

I have the following bit of code -

await Task.WhenAll(TaskList /*List of Task objects*/);
await AnotherAwaitableMethod( );

This works fine and is necessary as AnotherAwaitableMethod relies on making certain that a task within TaskList is complete before executing.

However, I would like to be able to say something like

await Task.WhenAll(TaskList).ContinueWith( /*AnotherAwaitableMethod call?*/ );

Is this possible? Am I misunderstanding the purpose of Task.ContinueWith?

Answer 1

  await Task.WhenAll(TaskList /*List of Task objects*/);
  await AnotherAwaitableMethod( );

and

 await Task.WhenAll(TaskList /*List of Task objects*/).ContinueWith(_ => {AnotherAwaitableMethod();}).Unwrap();

will act almost identically. Using ContinueWith however will give you a lot move power if you use its overloads. One of the main reasons to use ContinueWith is when you want to execute AnotherAwaitableMethod conditionally based on the result of the first task(s) or when you want to control the context using TaskContinuationOptions