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

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

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

Syntax

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

Type Parameters

  • TResult
    The type of the result produced by the continuation.

Parameters

  • continuationFunction
    Type: System.Func<Task, TResult>
    A function to run according to the specified continuationOptions. When run, the delegate will be passed the completed task as an argument.

Return Value

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

Exceptions

Exception Condition
ObjectDisposedException

The Task has been disposed.

-or-

The CancellationTokenSource that created the token 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.

Remarks

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.

Examples

The following example shows how to use the ContinueWith method with continuation options:

Version Information

Silverlight

Supported in: 5

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.