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

.NET Framework 4.6 and 4.5

Creates a continuation that executes based on the specified task continuation options when the target Task completes. The continuation receives caller-supplied state information.

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

public Task<TResult> ContinueWith<TResult>(
	Func<Task, Object, TResult> continuationFunction,
	Object state,
	TaskContinuationOptions continuationOptions
)

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.

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.

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.

The returned Task<TResult> will not be scheduled for execution until the current task has completed. If the continuation criteria specified through the continuationOptions parameter are not met, the continuation task will be canceled instead of scheduled.

.NET Framework

Supported in: 4.6, 4.5

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
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