ContinueWhenAll Method (Task[], Func(Task[], TResult), CancellationToken, TaskContinuationOptions, TaskScheduler)

TaskFactory(Of TResult).ContinueWhenAll Method (Task(), Func(Of Task(), TResult), CancellationToken, TaskContinuationOptions, TaskScheduler)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Creates a continuation task that will be started upon the completion of a set of provided Tasks.

Namespace:  System.Threading.Tasks
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Public Function ContinueWhenAll ( _
	tasks As Task(), _
	continuationFunction As Func(Of Task(), TResult), _
	cancellationToken As CancellationToken, _
	continuationOptions As TaskContinuationOptions, _
	scheduler As TaskScheduler _
) As Task(Of TResult)

Parameters

tasks
Type: System.Threading.Tasks.Task ()
The array of tasks from which to continue.
continuationFunction
Type: System.Func(Of Task (), TResult)
The function delegate to execute asynchronously when all tasks in the tasks array have completed.
cancellationToken
Type: System.Threading.CancellationToken
The cancellation token that will be assigned to the new continuation task.
continuationOptions
Type: System.Threading.Tasks.TaskContinuationOptions
One of the enumeration values that controls the behavior of the created continuation task. The NotOn* or OnlyOn* values are not valid.
scheduler
Type: System.Threading.Tasks.TaskScheduler
The scheduler that is used to schedule the created continuation task.

Return Value

Type: System.Threading.Tasks.Task(Of TResult)
The new continuation task.

ExceptionCondition
ArgumentNullException

The tasks array is Nothing.

-or-

The continuationFunction argument is Nothing.

-or-

The scheduler argument is Nothing.

ArgumentException

The tasks array contains a null value or is empty.

ArgumentOutOfRangeException

continuationOptions specifies an invalid value.

ObjectDisposedException

One of the elements in the tasks array has been disposed.

-or-

The CancellationTokenSource that created cancellationToken has already been disposed.

After completion, a task is in one of these states: RanToCompletion, Faulted, or Canceled states.

Windows Phone OS

Supported in: 8.1, 8.0

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