How can I cancel Task.WhenAll?

Question

Currenly using the following code to wait for a collection of tasks to complete. However, I now have a situation where I want to be able to cancel/abort the WhenAll call, v

Answer 1

Dim tcs as new TaskCompletionSource(Of Object)()
Await Tasks.Task.WhenAny(Tasks.Task.WhenAll(TaskCollection), tcs)

To cancel, call tcs.SetResult(Nothing). This will fire your Task.WhenAny.