TaskFactory.ContinueWhenAny Method (Task[], Action<Task>)


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 : 
        tasks:Task[] *
        continuationAction:Action<Task> -> Task


Type: System.Threading.Tasks.Task[]

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

Type: System.Action<Task>

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

Return Value

Type: System.Threading.Tasks.Task

The new continuation Task.

Exception Condition

One of the elements in the tasks array has been disposed.


The tasks array is null.


The continuationAction argument is null.


The tasks array contains a null value.


The tasks array is empty.

The following example shows how to use ContinueWhenAny and ContinueWhenAll:

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.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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