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

April 12, 2014

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<TResult>(
	Task[] tasks,
	Func<Task[], TResult> continuationFunction,
	CancellationToken cancellationToken
)

Type Parameters

TResult

The type of the result that is returned by the continuationFunction delegate and associated with the created Task<TResult>.

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 CancellationToken that will be assigned to the new continuation task.

Return Value

Type: System.Threading.Tasks.Task<TResult>
The new continuation Task<TResult>.
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 continuationFunction 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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