Windows Dev Center

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

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

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

public Task<TNewResult> ContinueWith<TNewResult>(
	Func<Task<TResult>, TNewResult> continuationFunction,
	CancellationToken cancellationToken
)

Type Parameters

TNewResult

The type of the result produced by the continuation.

Parameters

continuationFunction
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.

cancellationToken
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>.

ExceptionCondition
ObjectDisposedException

The Task<TResult> has been disposed.

-or-

The CancellationTokenSource that created cancellationToken has already been disposed.

ArgumentNullException

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.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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