Async always WaitingForActivation

Question

I am trying to figure out what the async & await keywords are all about, however the output isn\'t what I\'m expecting.

The console app

Answer 1

this code seems to have address the issue for me. it comes for a streaming class, ergo some of the nomenclature.

''' 
 Reference to the awaiting task. 
'''  The awaiting task. 
Protected ReadOnly Property AwaitingTask As Threading.Tasks.Task

''' 
 Reference to the Action task; this task status undergoes changes. 
Protected ReadOnly Property ActionTask As Threading.Tasks.Task

''' 
 Reference to the cancellation source. 
Protected ReadOnly Property TaskCancellationSource As Threading.CancellationTokenSource

''' 
 Starts the action task. 
'''  The action to stream the entities, which calls
'''                           . 
'''  The awaiting task. 
Private Async Function AsyncAwaitTask(ByVal taskAction As Action) As Task
    Me._ActionTask = Task.Run(taskAction)
    Await Me.ActionTask '  Task.Run(streamEntitiesAction)
    Try
        Me.ActionTask?.Wait()
        Me.OnStreamTaskEnded(If(Me.ActionTask Is Nothing, TaskStatus.RanToCompletion, Me.ActionTask.Status))
    Catch ex As AggregateException
        Me.OnExceptionOccurred(ex)
    Finally
        Me.TaskCancellationSource.Dispose()
    End Try
End Function

''' 
 Starts Streaming the events. 
'''  Thrown when the requested operation is invalid. 
'''             The bucket key. 
'''               The timeout. 
'''  The action to stream the entities, which calls
'''                                     . 
Public Overridable Sub StartStreamEvents(ByVal bucketKey As String, ByVal timeout As TimeSpan, ByVal streamEntitiesAction As Action)
    If Me.IsTaskActive Then
        Throw New InvalidOperationException($"Stream task is {Me.ActionTask.Status}")
    Else
        Me._TaskCancellationSource = New Threading.CancellationTokenSource
        Me.TaskCancellationSource.Token.Register(AddressOf Me.StreamTaskCanceled)
        Me.TaskCancellationSource.CancelAfter(timeout)
        ' the action class is created withing the Async/Await function
        Me._AwaitingTask = Me.AsyncAwaitTask(streamEntitiesAction)
    End If
End Sub