TaskFactory::ContinueWhenAny<TResult> Method (array<Task^>^, Func<Task^, TResult>^, TaskContinuationOptions)

.NET Framework (current version)

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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

C++

public:
generic<typename TResult>
Task<TResult>^ ContinueWhenAny(
	array<Task^>^ tasks,
	Func<Task^, TResult>^ continuationFunction,
	TaskContinuationOptions continuationOptions
)

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.

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

Return Value

Type: System.Threading.Tasks::Task<TResult>^

The new continuation Task<TResult>.

Type Parameters

TResult: The type of the result that is returned by the continuationFunction delegate and associated with the created Task<TResult>.

Exceptions

Exception	Condition
ObjectDisposedException	The exception that is thrown when one of the elements in the tasks array has been disposed.
ArgumentNullException	The exception that is thrown when the tasks array is null. -or- The exception that is thrown when the continuationFunction argument is null.
ArgumentOutOfRangeException	The exception that is thrown when the continuationOptions argument specifies an invalid TaskContinuationOptions value.
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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1