ContinueWhenAll(TAntecedentResult) Method (Task(TAntecedentResult)[], Func(Task(TAntecedentResult)[], TResult), TaskContinuationOptions)

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

[ 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(Of TAntecedentResult) ( _
	tasks As Task(Of TAntecedentResult)(), _
	continuationFunction As Func(Of Task(Of TAntecedentResult)(), TResult), _
	continuationOptions As TaskContinuationOptions _
) As Task(Of TResult)

Type Parameters

TAntecedentResult

The type of the result of the antecedent tasks.

Parameters

tasks
Type: System.Threading.Tasks.Task(Of TAntecedentResult) ()
The array of tasks from which to continue.
continuationFunction
Type: System.Func(Of Task(Of TAntecedentResult) (), TResult)
The function delegate to execute asynchronously when all tasks in the tasks array have completed.
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.

Return Value

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

ExceptionCondition
ObjectDisposedException

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

ArgumentNullException

The tasks array is Nothing.

-or-

The continuationFunction argument is Nothing.

ArgumentOutOfRangeException

The continuationOptions argument specifies an invalid value.

ArgumentException

The tasks array contains a null value or is empty.

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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