Task.WaitAll Method (Task(), Int32)

Waits for all of the provided Task objects to complete execution within a specified number of milliseconds.

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

'Declaration
Public Shared Function WaitAll ( _
	tasks As Task(), _
	millisecondsTimeout As Integer _
) As Boolean

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.

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 Nothing.

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.

ArgumentOutOfRangeException

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

ArgumentException

The tasks argument contains a null element.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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