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

Creates and starts a task.

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

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

Parameters

action
Type: System.Action
The action delegate to execute asynchronously.
cancellationToken
Type: System.Threading.CancellationToken
The cancellation token that will be assigned to the new task
creationOptions
Type: System.Threading.Tasks.TaskCreationOptions
A bitwise combination of the enumeration values that control the behavior of the created task.
scheduler
Type: System.Threading.Tasks.TaskScheduler
The scheduler for the created task.

Return Value

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

ExceptionCondition
ObjectDisposedException

The provided CancellationToken has already been disposed.

ArgumentNullException

The action argument is null.

-or-

The scheduler argument is null.

ArgumentOutOfRangeException

The creationOptions argument specifies an invalid value.

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.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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