Task.WaitAll Method (Task(), CancellationToken)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Waits for all of the provided Task objects to complete execution.
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public Shared Sub WaitAll ( _ tasks As Task(), _ cancellationToken As CancellationToken _ )
Parameters
- tasks
- Type:
System.Threading.Tasks.Task
()
An array of Task instances on which to wait.
- cancellationToken
- Type: System.Threading.CancellationToken
A CancellationToken to observe while waiting for the tasks to complete.
| Exception | Condition |
|---|---|
| OperationCanceledException | The cancellationToken was canceled. |
| ArgumentNullException | The tasks argument is null. |
| AggregateException | At least one of the Task instances was canceled -or- an exception was thrown during the execution of at least one of the Task instances. If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection. |
| ArgumentException | The tasks argument contains a null element. |
| ObjectDisposedException | One or more of the Task objects in tasks has been disposed. |