TaskFactory.ContinueWhenAny<TResult> Method (array<Task[], Func<Task, TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler)

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Creates a continuation Task<TResult> that will be started upon the completion of any Task in the provided set.

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

Syntax

'Declaration
Public Function ContinueWhenAny(Of TResult) ( _
    tasks As Task(), _
    continuationFunction As Func(Of Task, TResult), _
    cancellationToken As CancellationToken, _
    continuationOptions As TaskContinuationOptions, _
    scheduler As TaskScheduler _
) As Task(Of TResult)

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

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: array<System.Threading.Tasks.Task[]
  The array of tasks from which to continue when one task completes.

• continuationFunction
  Type: System.Func<Task, TResult>
  The function delegate to execute asynchronously when one task in the tasks array completes.

• 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<TResult>.

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

Return Value

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

Exceptions

Exception	Condition
ArgumentNullException	The exception that is thrown when the tasks array is null. -or- The exception that is thrown when the continuationFunction argument is null. -or- The exception that is thrown when the scheduler 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.

Remarks

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

Version Information

Silverlight

Supported in: 5

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

See Also

Reference

TaskFactory Class

ContinueWhenAny Overload

System.Threading.Tasks Namespace

Other Resources

Task Parallel Library Overview

Task Factories

Continuation Tasks

Task Cancellation

Change History

Date	History	Reason
	Added text to clarify asynchronous execution of continuations.	Customer feedback.