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


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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,
	TaskContinuationOptions continuationOptions


Type: System.Func<Task<TResult>, TNewResult>

A function to run according the condition specified in continuationOptions.

When run, the delegate will be passed the completed task as an argument.

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.

Return Value

Type: System.Threading.Tasks.Task<TNewResult>

A new continuation Task<TResult>.

Type Parameters


The type of the result produced by the continuation.

Exception Condition

The Task<TResult> has been disposed.


The continuationFunction argument is null.


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>..

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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