TaskFactory(Of TResult).StartNew Method (Func(Of TResult), CancellationToken)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Creates and starts a task.
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public Function StartNew ( _ function As Func(Of TResult), _ cancellationToken As CancellationToken _ ) As Task(Of TResult)
Parameters
- function
- Type: System.Func(Of 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.
| Exception | Condition |
|---|---|
| ObjectDisposedException | The cancellation token source that createdcancellationToken has already been disposed. |
| ArgumentNullException | The function argument is Nothing. |
Calling StartNew is functionally equivalent to creating a task by using one of the Task(Of 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.