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

Task Parallel System.Threading

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)
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

ExceptionCondition
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..::.ObjectDisposedExceptionThe provided CancellationToken has already been disposed.

See Also