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

May 11, 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(
	Task[] tasks,
	Func<Task[], TResult> continuationFunction,
	TaskContinuationOptions continuationOptions
)

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.
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<TResult>
The new continuation task.

ExceptionCondition
ObjectDisposedException

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

ArgumentNullException

The tasks array is null.

-or-

The continuationFunction argument is null.

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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