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TaskFactory.ContinueWhenAny<'TAntecedentResult> Method (Task<'TAntecedentResult>[], Action<Task<'TAntecedentResult>>, CancellationToken, TaskContinuationOptions, TaskScheduler)


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

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

member ContinueWhenAny<'TAntecedentResult> : 
        tasks:Task<'TAntecedentResult>[] *
        continuationAction:Action<Task<'TAntecedentResult>> *
        cancellationToken:CancellationToken *
        continuationOptions:TaskContinuationOptions *
        scheduler:TaskScheduler -> Task


Type: System.Threading.Tasks.Task<'TAntecedentResult>[]

The array of tasks from which to continue when one task completes.

Type: System.Action<Task<'TAntecedentResult>>

The action delegate to execute when one task in the tasks array completes.

Type: System.Threading.CancellationToken

The CancellationToken that will be assigned to the new continuation task.

Type: System.Threading.Tasks.TaskContinuationOptions

The TaskContinuationOptions value that controls the behavior of the created continuation Task.

Type: System.Threading.Tasks.TaskScheduler

The TaskScheduler that is used to schedule the created continuation Task<'TResult>.

Return Value

Type: System.Threading.Tasks.Task

The new continuation Task.

Type Parameters


The type of the result of the antecedent tasks.

Exception Condition

The exception that is thrown when the tasks array is null.


The exception that is thrown when the continuationAction argument is null.


The exception that is thrown when the scheduler argument is null.


The exception that is thrown when the tasks array contains a null value.


The exception that is thrown when the tasks array is empty.

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

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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