ContinueWhenAll Method (Task[], Action(Task[]), CancellationToken)
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TaskFactory.ContinueWhenAll Method (Task[], Action<Task[]>, CancellationToken)

[ 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 ContinueWhenAll(
	Task[] tasks,
	Action<Task[]> continuationAction,
	CancellationToken cancellationToken
)

Parameters

tasks
Type: System.Threading.Tasks.Task []
The array of tasks from which to continue.
continuationAction
Type: System.Action< Task []>
The action delegate to execute when all tasks in the tasks array have completed.
cancellationToken
Type: System.Threading.CancellationToken
The CancellationToken that will be assigned to the new continuation task.

Return Value

Type: System.Threading.Tasks.Task
The new continuation Task.

ExceptionCondition
ObjectDisposedException

The exception that is thrown when one of the elements in the tasks array has been disposed.

-or-

The CancellationTokenSource that created cancellationToken has already been disposed.

ArgumentNullException

The exception that is thrown when the tasks array is null.

-or-

The exception that is thrown when the continuationAction argument is null.

ArgumentException

The exception that is thrown when the tasks array contains a null value.

-or-

The exception that is thrown when the tasks array is empty.

Windows Phone OS

Supported in: 8.1, 8.0

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