TaskFactory<TResult>::StartNew Method (Func<TResult>^, CancellationToken)

.NET Framework (current version)

Creates and starts a task.

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

Syntax

public:
Task<TResult>^ StartNew(
	Func<TResult>^ function,
	CancellationToken cancellationToken
)

Parameters

function: Type: System::Func<TResult>^
A function delegate that returns the future result to be available through the task.

cancellationToken: Type: System.Threading::CancellationToken
The cancellation token that will be assigned to the new task.

Return Value

Type: System.Threading.Tasks::Task<TResult>^

The started task.

Exceptions

Exception	Condition
ObjectDisposedException	The cancellation token source that createdcancellationToken has already been disposed.
ArgumentNullException	The function argument is null.

Remarks

Calling StartNew is functionally equivalent to creating a task by using one of the Task<TResult> constructors and then calling the Start method to schedule it for execution.

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

Universal Windows Platform
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