Task.ContinueWith Method (Action<Task>, TaskContinuationOptions)
Creates a continuation that executes when the target task completes according to the specified TaskContinuationOptions.
Assembly: mscorlib (in mscorlib.dll)
member ContinueWith :
continuationAction:Action<Task> *
continuationOptions:TaskContinuationOptions -> Task
Parameters
- continuationAction
-
Type:
System.Action<Task>
An action to run according to the specified continuationOptions. When run, the delegate will be passed the completed task as an argument.
- 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.
| Exception | Condition |
|---|---|
| ArgumentNullException | The continuationAction argument is null. |
| ArgumentOutOfRangeException | 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.
The following example demonstrates using TaskContinuationOptions to specify that a continuation task should run synchronously when the antecedent task completes. (If the specified task has already completed by the time ContinueWith is called, the synchronous continuation will run on the thread calling ContinueWith.)
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1