ContinueWith(TResult) Method (Func(Task, TResult), CancellationToken, TaskContinuationOptions, TaskScheduler)

Task Parallel System.Threading

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Creates a continuation that executes when the target Task completes.

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

Syntax

Visual Basic (Declaration)
Public Function ContinueWith(Of TResult) ( _ continuationFunction As Func(Of Task, TResult), _ cancellationToken As CancellationToken, _ continuationOptions As TaskContinuationOptions, _ scheduler As TaskScheduler _ ) As Task(Of TResult)

Visual Basic (Declaration)

Public Function ContinueWith(Of TResult) ( _
	continuationFunction As Func(Of Task, TResult), _
	cancellationToken As CancellationToken, _
	continuationOptions As TaskContinuationOptions, _
	scheduler As TaskScheduler _
) As Task(Of TResult)

C#
public Task<TResult> ContinueWith<TResult>( Func<Task, TResult> continuationFunction, CancellationToken cancellationToken, TaskContinuationOptions continuationOptions, TaskScheduler scheduler )

Parameters

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

continuationOptions: Type: System.Threading.Tasks..::.TaskContinuationOptions
Options for when the continuation is scheduled and how it behaves. This includes criteria, such as OnlyOnCanceled, as well as execution options, such as ExecuteSynchronously.

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

Type Parameters

TResult: 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. If the criteria specified through the continuationOptions parameter are not met, the continuation task will be canceled instead of scheduled.

Exceptions

Exception	Condition
System..::.ArgumentNullException	The continuationFunction argument is null.
System..::.ArgumentOutOfRangeException	The continuationOptions argument specifies an invalid value for TaskContinuationOptions.
System..::.ArgumentNullException	The scheduler argument is null.
System..::.ObjectDisposedException	The Task has been disposed.
System..::.ObjectDisposedException	The provided CancellationToken has already been disposed.