TaskFactory(Of TResult).ContinueWhenAll Method (Task(), Func(Of Task(), TResult), CancellationToken, TaskContinuationOptions, TaskScheduler)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Creates a continuation task that will be started upon the completion of a set of provided Tasks.
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public Function ContinueWhenAll ( _ tasks As Task(), _ continuationFunction As Func(Of Task(), TResult), _ cancellationToken As CancellationToken, _ continuationOptions As TaskContinuationOptions, _ scheduler As TaskScheduler _ ) As Task(Of TResult)
Parameters
- tasks
- Type:
System.Threading.Tasks.Task
()
The array of tasks from which to continue.
- continuationFunction
- Type: System.Func(Of
Task
(), TResult)
The function delegate to execute asynchronously when all tasks in the tasks array have completed.
- cancellationToken
- Type: System.Threading.CancellationToken
The cancellation token that will be assigned to the new continuation task.
- continuationOptions
- Type: System.Threading.Tasks.TaskContinuationOptions
One of the enumeration values that controls the behavior of the created continuation task. The NotOn* or OnlyOn* values are not valid.
- scheduler
- Type: System.Threading.Tasks.TaskScheduler
The scheduler that is used to schedule the created continuation task.
| Exception | Condition |
|---|---|
| ArgumentNullException | The tasks array is Nothing. -or- The continuationFunction argument is Nothing. -or- The scheduler argument is Nothing. |
| ArgumentException | The tasks array contains a null value or is empty. |
| ArgumentOutOfRangeException | continuationOptions specifies an invalid value. |
| ObjectDisposedException | One of the elements in the tasks array has been disposed. -or- The CancellationTokenSource that created cancellationToken has already been disposed. |
After completion, a task is in one of these states: RanToCompletion, Faulted, or Canceled states.