TaskFactory.StartNew<TResult> Method (Func<Object, TResult>, Object, CancellationToken)

July 28, 2014

Creates and starts a Task<TResult>.

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

public Task<TResult> StartNew<TResult>(
	Func<Object, TResult> function,
	Object state,
	CancellationToken cancellationToken
)

Type Parameters

TResult

The type of the result available through the Task<TResult>.

Parameters

function
Type: System.Func<Object, TResult>
A function delegate that returns the future result to be available through the Task<TResult>.
state
Type: System.Object
An object containing data to be used by the function delegate.
cancellationToken
Type: System.Threading.CancellationToken
The CancellationToken that will be assigned to the new Task

Return Value

Type: System.Threading.Tasks.Task<TResult>
The started Task<TResult>.

ExceptionCondition
ObjectDisposedException

The provided CancellationToken has already been disposed.

ArgumentNullException

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

Calling StartNew is functionally equivalent to creating a Task<TResult> 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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