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Task.ContinueWith<TResult> Method (Func<Task, Object, TResult>, Object, CancellationToken, TaskContinuationOptions, TaskScheduler)

July 28, 2014

Creates a continuation that executes when the target Task completes.

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

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

Type Parameters

TResult

The type of the result produced by the continuation.

Parameters

continuationFunction
Type: System.Func<Task, Object, TResult>
A function to run when the Task completes. When run, the delegate will be passed the completed task and the caller-supplied state object as arguments.
state
Type: System.Object
An object representing data to be used by the continuation function.
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.

Return Value

Type: System.Threading.Tasks.Task<TResult>
A new continuation Task<TResult>.

ExceptionCondition
ArgumentNullException

The continuationFunction argument is null.

ArgumentOutOfRangeException

The continuationOptions argument specifies an invalid value for TaskContinuationOptions.

ArgumentNullException

The scheduler argument is null.

ObjectDisposedException

The provided CancellationToken has already been disposed.

The returned Task<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.

Windows Phone OS

Supported in: 8.1, 8.0

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