TaskFactory(Of TResult).StartNew Method (Func(Of Object, TResult), Object, TaskCreationOptions)
[ 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 Object, TResult), _ state As Object, _ creationOptions As TaskCreationOptions _ ) As Task(Of TResult)
Parameters
- function
- Type: System.Func(Of Object, TResult)
A function delegate that returns the future result to be available through the task.
- state
- Type: System.Object
An object that contains data to be used by the function delegate.
- creationOptions
- Type: System.Threading.Tasks.TaskCreationOptions
One of the enumeration values that controls the behavior of the created task.
| Exception | Condition |
|---|---|
| ArgumentNullException | The function argument is Nothing. |
| ArgumentOutOfRangeException | The creationOptions parameter specifies an invalid value. |
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.