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


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Creates a continuation that receives a cancellation token and executes asynchronously when the target Task completes.

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

member ContinueWith : 
        continuationAction:Action<Task> *
        cancellationToken:CancellationToken -> Task


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.

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.

Exception Condition

The CancellationTokenSource that created the token has already been disposed.


The continuationAction argument is null.

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.

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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