TaskFactory.StartNew Method (Action, CancellationToken, TaskCreationOptions, TaskScheduler)
Creates and starts a Task.
Assembly: mscorlib (in mscorlib.dll)
Public Function StartNew ( action As Action, cancellationToken As CancellationToken, creationOptions As TaskCreationOptions, scheduler As TaskScheduler ) As Task
The action delegate to execute asynchronously.
- Type: System.Threading.CancellationToken
A TaskCreationOptions value that controls the behavior of the created Task
The provided CancellationToken has already been disposed.
The exception that is thrown when the action argument is null.
The exception that is thrown when the scheduler argument is null.
The exception that is thrown when the creationOptions argument specifies an invalid TaskCreationOptions value. The exception that is thrown when the creationOptions argument specifies an invalid TaskCreationOptions value. For more information, see the Remarks for FromAsync
Calling StartNew is functionally equivalent to creating a Task using one of its constructors and then calling Start to schedule it for execution.
Starting with the .NET Framework 4.5, you can use the Run method with an Action object as a quick way to call StartNew with default parameters. For more information and code examples, see Task.Run vs Task.Factory.StartNew in the Parallel Programming with .NET blog.
Available since 8
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Available since 8.1