Export (0) Print
Expand All

Task.WaitAll Method (Task[], Int32, CancellationToken)

Waits for all of the provided Task objects to complete execution.

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

public static bool WaitAll(
	Task[] tasks,
	int millisecondsTimeout,
	CancellationToken cancellationToken
)

Parameters

tasks
Type: System.Threading.Tasks.Task[]
An array of Task instances on which to wait.
millisecondsTimeout
Type: System.Int32
The number of milliseconds to wait, or Infinite (-1) to wait indefinitely.
cancellationToken
Type: System.Threading.CancellationToken
A CancellationToken() to observe while waiting for the tasks to complete.

Return Value

Type: System.Boolean
true if all of the Task instances completed execution within the allotted time; otherwise, false.

ExceptionCondition
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

millisecondsTimeout is a negative number other than -1, which represents an infinite time-out.

ArgumentException

The tasks argument contains a null element.

OperationCanceledException

The cancellationToken was canceled.

The cancellationToken argument is used to cancel the wait operation. If it is canceled, the Wait returns false (False in Visual Basic). Cancellation of the tasks is a distinct operation, and is signaled by the AggregateException as noted above.

Silverlight

Supported in: 5

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Community Additions

ADD
Show:
© 2014 Microsoft