StartNew Method (Action(Object), Object, CancellationToken, TaskCreationOptions, TaskScheduler)

TaskFactory.StartNew Method (Action<Object>, Object, CancellationToken, TaskCreationOptions, TaskScheduler)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Creates and starts a Task.

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

public Task StartNew(
	Action<Object> action,
	Object state,
	CancellationToken cancellationToken,
	TaskCreationOptions creationOptions,
	TaskScheduler scheduler
)

Parameters

action
Type: System.Action<Object>
The action delegate to execute asynchronously.
state
Type: System.Object
An object containing data to be used by the action delegate.
cancellationToken
Type: System.Threading.CancellationToken
The CancellationToken that will be assigned to the new task.
creationOptions
Type: System.Threading.Tasks.TaskCreationOptions
A TaskCreationOptions value that controls the behavior of the created Task
scheduler
Type: System.Threading.Tasks.TaskScheduler
The TaskScheduler that is used to schedule the created Task.

Return Value

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

ExceptionCondition
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

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.

Windows Phone OS

Supported in: 8.1, 8.0

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