ContinueWhenAll Method (Task[], Action(Task[]), CancellationToken, TaskContinuationOptions, TaskScheduler)

Task Parallel System.Threading

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Creates a continuation Task that will be started upon the completion of a set of provided Tasks.

Namespace: System.Threading.Tasks
Assembly: System.Threading (in System.Threading.dll)

Syntax

Visual Basic (Declaration)
Public Function ContinueWhenAll ( _ tasks As Task(), _ continuationAction As Action(Of Task()), _ cancellationToken As CancellationToken, _ continuationOptions As TaskContinuationOptions, _ scheduler As TaskScheduler _ ) As Task

Visual Basic (Declaration)

Public Function ContinueWhenAll ( _
	tasks As Task(), _
	continuationAction As Action(Of Task()), _
	cancellationToken As CancellationToken, _
	continuationOptions As TaskContinuationOptions, _
	scheduler As TaskScheduler _
) As Task

C#
public Task ContinueWhenAll( Task[] tasks, Action<Task[]> continuationAction, CancellationToken cancellationToken, TaskContinuationOptions continuationOptions, TaskScheduler scheduler )

Parameters

tasks: Type: array< System.Threading.Tasks..::.Task >[]()[]
The array of tasks from which to continue.

continuationAction: Type: System..::.Action<(Of <(array< 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.

continuationOptions: Type: System.Threading.Tasks..::.TaskContinuationOptions
The TaskContinuationOptions value that controls the behavior of the created continuation Task.

scheduler: Type: System.Threading.Tasks..::.TaskScheduler
The TaskScheduler that is used to schedule the created continuation Task.

Return Value

The new continuation Task.

Remarks

The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

Exceptions

Exception	Condition
System..::.ArgumentNullException	The exception that is thrown when the tasks array is null.
System..::.ArgumentNullException	The exception that is thrown when the continuationAction argument is null.
System..::.ArgumentNullException	The exception that is thrown when the scheduler argument is null.
System..::.ArgumentException	The exception that is thrown when the tasks array contains a null value.
System..::.ArgumentException	The exception that is thrown when the tasks array is empty.
System..::.ArgumentOutOfRangeException	The exception that is thrown when the continuationOptions argument specifies an invalid TaskContinuationOptions value.
System..::.ObjectDisposedException	The exception that is thrown when one of the elements in the tasks array has been disposed.
System..::.ObjectDisposedException	The provided CancellationToken has already been disposed.