Compartir a través de

  • Artículo

TaskFactory.StartNew Method (Action, CancellationToken, TaskCreationOptions, TaskScheduler)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Creates and starts a Task.

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

Syntax

'Declaration
Public Function StartNew ( _
    action As Action, _
    cancellationToken As CancellationToken, _
    creationOptions As TaskCreationOptions, _
    scheduler As TaskScheduler _
) As Task

public Task StartNew(
    Action action,
    CancellationToken cancellationToken,
    TaskCreationOptions creationOptions,
    TaskScheduler scheduler
)

Parameters

  • action
    Type: System.Action
    The action delegate to execute asynchronously.

Return Value

Type: System.Threading.Tasks.Task
The started Task.

Exceptions

Exception Condition
ObjectDisposedException

The provided CancellationToken has already been disposed.
ArgumentNullException

The exception that is thrown when the action argument is null.

-or-

The exception that is thrown when the scheduler argument is null.
ArgumentOutOfRangeException

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

Remarks

Calling StartNew is functionally equivalent to creating a Task using one of its constructors and then calling Start to schedule it for execution.

However, unless creation and scheduling must be separated, StartNew is the recommended approach for both simplicity and performance.

Version Information

Silverlight

Supported in: 5

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.