ContinueWith Method (Action(Task, Object), Object, TaskContinuationOptions)
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Task.ContinueWith Method (Action<Task, Object>, Object, TaskContinuationOptions)

.NET Framework 4.6 and 4.5

Creates a continuation that receives caller-supplied state information and executes when the target Task completes. The continuation executes based on a set of specified conditions.

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

public Task ContinueWith(
	Action<Task, object> continuationAction,
	object state,
	TaskContinuationOptions continuationOptions


Type: System.Action<TaskObject>

An action to run when the Task completes. When run, the delegate will be passed the completed task and the caller-supplied state object as arguments.

Type: System.Object

An object representing data to be used by the continuation action.

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

A new continuation Task.

Exception Condition

The continuationAction argument is null.


The continuationOptions argument specifies an invalid value for TaskContinuationOptions.

The returned Task 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.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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