Task.WaitAll Method (Task[], CancellationToken)

 

Waits for all of the provided Task objects to complete execution unless the wait is cancelled.

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

public static void WaitAll(
	Task[] tasks,
	CancellationToken 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. If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection.

-or-

An exception was thrown during the execution of at least one of the Task instances.

ArgumentException

The tasks argument contains a null element.

-or-

The tasks argument is an empty array.

ObjectDisposedException

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

The cancellationToken argument is used to cancel the wait operation. Cancellation of the tasks is a distinct operation, and is signaled by the AggregateException as noted above.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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