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

TaskFactory<TResult>.ContinueWhenAll Method (Task[], Func<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)

public Task<TResult> ContinueWhenAll(
	Task[] tasks,
	Func<Task[], TResult> continuationFunction,
	CancellationToken cancellationToken,
	TaskContinuationOptions continuationOptions,
	TaskScheduler scheduler
)

Parameters

tasks
Type: System.Threading.Tasks.Task []
The array of tasks from which to continue.
continuationFunction
Type: System.Func< 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<TResult>
The new continuation task.

ExceptionCondition
ArgumentNullException

The tasks array is null.

-or-

The continuationFunction argument is null.

-or-

The scheduler argument is null.

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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