TaskFactory<TResult>.StartNew Method (Func<TResult>, TaskCreationOptions)

Creates and starts a task.

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

public Task<TResult> StartNew(
	Func<TResult> function,
	TaskCreationOptions creationOptions
)

Parameters

function
Type: System.Func<TResult>

A function delegate that returns the future result to be available through the task.

creationOptions
Type: System.Threading.Tasks.TaskCreationOptions

One of the enumeration values that controls the behavior of the created task.

Return Value

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

ExceptionCondition
ArgumentNullException

The function argument is null.

ArgumentOutOfRangeException

The creationOptions parameter specifies an invalid value.

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.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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