WaitAll Method (Task[])
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Task.WaitAll Method (Task())

[ 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.

Namespace:  System.Threading.Tasks
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Public Shared Sub WaitAll ( _
	ParamArray tasks As Task() _
)

Parameters

tasks
Type: System.Threading.Tasks.Task ()
An array of Task instances on which to wait.

ExceptionCondition
ObjectDisposedException

One or more of the Task objects in tasks has been disposed.

ArgumentNullException

The tasks argument is null.

-or-

The tasks argument contains a null element.

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.

The following example demonstrates using WaitAll to wait for a set of tasks to complete.

Windows Phone OS

Supported in: 8.1, 8.0

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