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TaskFactory.ContinueWhenAny<TAntecedentResult, TResult> Method (array<Task<TAntecedentResult>[], Func<Task<TAntecedentResult>, 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 TAntecedentResult, TResult) ( _
    tasks As Task(Of TAntecedentResult)(), _
    continuationFunction As Func(Of Task(Of TAntecedentResult), TResult), _
    cancellationToken As CancellationToken, _
    continuationOptions As TaskContinuationOptions, _
    scheduler As TaskScheduler _
) As Task(Of TResult)

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

Type Parameters

  • TAntecedentResult
    The type of the result of the antecedent tasks.
  • 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<TAntecedentResult>[]
    The array of tasks from which to continue when one task completes.
  • continuationFunction
    Type: System.Func<Task<TAntecedentResult>, TResult>
    The function delegate to execute asynchronously when one task in the tasks array completes.

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.

Change History

Date

History

Reason

Added text to clarify asynchronous execution of continuations.

Customer feedback.