ContinueWith(TNewResult) Method (Func(Task(TResult), TNewResult), CancellationToken)

Task Parallel System.Threading

Creates a continuation that executes when the target Task<(Of <(TResult>)>) completes.

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

Syntax

Visual Basic (Declaration)
Public Function ContinueWith(Of TNewResult) ( _
	continuationFunction As Func(Of Task(Of TResult), TNewResult), _
	cancellationToken As CancellationToken _
) As Task(Of TNewResult)
C#
public Task<TNewResult> ContinueWith<TNewResult>(
	Func<Task<TResult>, TNewResult> continuationFunction,
	CancellationToken cancellationToken
)

Parameters

continuationFunction
Type: System..::.Func<(Of <(Task<(Of <(TResult>)>), TNewResult>)>)
A function to run when the Task<(Of <(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.

Type Parameters

TNewResult
The type of the result produced by the continuation.

Return Value

A new continuation Task<(Of <(TResult>)>).

Remarks

The returned Task<(Of <(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.

Exceptions

ExceptionCondition
System..::.ArgumentNullException The continuationFunction argument is null.
System..::.ObjectDisposedException The Task<(Of <(TResult>)>) has been disposed.
System..::.ObjectDisposedExceptionThe provided CancellationToken has already been disposed.

See Also