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

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), _
	scheduler As TaskScheduler _
) As Task(Of TNewResult)
C#
public Task<TNewResult> ContinueWith<TNewResult>(
	Func<Task<TResult>, TNewResult> continuationFunction,
	TaskScheduler scheduler
)

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.
scheduler
Type: System.Threading.Tasks..::.TaskScheduler
The TaskScheduler to associate with the continuation task and to use for its execution.

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..::.ArgumentNullException The scheduler argument is null.
System..::.ObjectDisposedException The Task<(Of <(TResult>)>) has been disposed.

See Also