Task.WaitAll Method (Task[], TimeSpan)
[ 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)
Parameters
- tasks
- Type:
System.Threading.Tasks.Task
[]
An array of Task instances on which to wait.
- timeout
- Type: System.TimeSpan
A TimeSpan that represents the number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely.
Return Value
Type: System.Booleantrue if all of the Task instances completed execution within the allotted time; otherwise, false.
| Exception | Condition |
|---|---|
| ObjectDisposedException | One or more of the Task objects in tasks has been disposed. |
| 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. |
| ArgumentOutOfRangeException | timeout is a negative number other than -1 milliseconds, which represents an infinite time-out -or- timeout is greater than MaxValue. |
| ArgumentException | The tasks argument contains a null element. |