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

Creates a continuation that executes according the condition specified in continuationOptions.

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

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

Type Parameters

TNewResult

The type of the result produced by the continuation.

Parameters

continuationFunction
Type: System.Func<Task<TResult>, TNewResult>
A function to run according the condition specified in continuationOptions.
When run, the delegate will be passed as an argument this completed task.
cancellationToken
Type: System.Threading.CancellationToken
The CancellationToken that will be assigned to the new 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<TNewResult>
A new continuation Task<TResult>.

ExceptionCondition
ObjectDisposedException

The Task<TResult> has been disposed.

-or-

The CancellationTokenSource that created cancellationToken has already been disposed.

ArgumentNullException

The continuationFunction argument is null.

-or-

The scheduler argument is null.

ArgumentOutOfRangeException

The continuationOptions argument specifies an invalid value for TaskContinuationOptions.

The returned Task<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.

The continuationFunction, when executed, should return a Task<TResult>.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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