TaskFactory<TResult>::StartNew Method (Func<TResult>^, CancellationToken, TaskCreationOptions, TaskScheduler^)
Creates and starts a task.
Assembly: mscorlib (in mscorlib.dll)
public:
Task<TResult>^ StartNew(
Func<TResult>^ function,
CancellationToken cancellationToken,
TaskCreationOptions creationOptions,
TaskScheduler^ scheduler
)
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.
- creationOptions
-
Type:
System.Threading.Tasks::TaskCreationOptions
One of the enumeration values that controls the behavior of the created task.
- scheduler
-
Type:
System.Threading.Tasks::TaskScheduler^
The task scheduler that is used to schedule the created task.
| Exception | Condition |
|---|---|
| ObjectDisposedException | The cancellation token source that createdcancellationToken has already been disposed. |
| ArgumentNullException | The function argument is null. -or- The scheduler 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.
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