Task<'TResult>.ContinueWith<'TNewResult> Method (Func<Task<'TResult>, 'TNewResult>, CancellationToken)


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Creates a continuation that executes asynchronously when the target Task<'TResult> completes.

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

member ContinueWith<'TNewResult> : 
        continuationFunction:Func<Task<'TResult>, 'TNewResult> *
        cancellationToken:CancellationToken -> Task<'TNewResult>


Type: System.Func<Task<'TResult>, 'TNewResult>

A function to run when the Task<'TResult> 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 task.

Return Value

Type: System.Threading.Tasks.Task<'TNewResult>

A new continuation Task<'TResult>.

Type Parameters


The type of the result produced by the continuation.

Exception Condition

The Task<'TResult> has been disposed.


The CancellationTokenSource that created cancellationToken has already been disposed.


The continuationFunction argument is null.

The returned Task<'TResult> 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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