Article
11/18/2011

Task.ContinueWith Method (Action<Task>, CancellationToken)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

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

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

Syntax

'Declaration
Public Function ContinueWith ( _
    continuationAction As Action(Of Task), _
    cancellationToken As CancellationToken _
) As Task

public Task ContinueWith(
    Action<Task> continuationAction,
    CancellationToken cancellationToken
)

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.

cancellationToken
Type: System.Threading.CancellationToken
The CancellationToken() that will be assigned to the new continuation task.

Return Value

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

Exceptions

Exception	Condition
ObjectDisposedException	The Task has been disposed. -or- The CancellationTokenSource that created the token has already been disposed.
ArgumentNullException	The continuationAction argument is null.

ObjectDisposedException

The Task has been disposed.

-or-

The CancellationTokenSource that created the token has already been disposed.

ArgumentNullException

The continuationAction argument is null.

Remarks

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.

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.

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