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Task.ContinueWith Method (Action(Task))

Creates a continuation that executes asynchronously when the target Task completes.

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

member ContinueWith : 
        continuationAction:Action<Task> -> Task

Parameters

continuationAction
Type: System.Action(Task)

An action to run when the Task completes. When run, the delegate will be passed the completed task as an argument.

Return Value

Type: System.Threading.Tasks.Task
A new continuation Task.

ExceptionCondition
ArgumentNullException

The continuationAction argument is a null reference (Nothing in Visual Basic).

The returned Task will not be scheduled for execution until the current task has completed, whether it completes due to running to completion successfully, faulting due to an unhandled exception, or exiting out early due to being canceled.

The following example defines a task that populates an array with 100 random date and time values. It uses the ContinueWith(Action(Task)) method to select the earliest and the latest date values once the array is fully populated.

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

Because a console application may terminate before the continuation task executes, the Wait() method is called to ensure that the continuation finishes executing before the example ends.

For an additional example, see Chaining Tasks by Using Continuation Tasks.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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