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TaskFactory.ContinueWhenAll(Of TAntecedentResult) Method (Task(Of TAntecedentResult)(), Action(Of Task(Of TAntecedentResult)()), TaskContinuationOptions)

Creates a continuation task that starts when a set of specified tasks has completed.

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

Public Function ContinueWhenAll(Of TAntecedentResult) ( _
	tasks As Task(Of TAntecedentResult)(), _
	continuationAction As Action(Of Task(Of TAntecedentResult)()), _
	continuationOptions As TaskContinuationOptions _
) As Task

Type Parameters


The type of the result of the antecedent tasks.


Type: System.Threading.Tasks.Task(Of TAntecedentResult)()

The array of tasks from which to continue.

Type: System.Action(Of Task(Of TAntecedentResult)())

The action delegate to execute when all tasks in the tasks array have completed.

Type: System.Threading.Tasks.TaskContinuationOptions

A bitwise combination of the enumeration values that control the behavior of the new continuation task. The NotOn* and OnlyOn* members are not supported.

Return Value

Type: System.Threading.Tasks.Task
The new continuation task.


An element in the tasks array has been disposed.


The tasks array is Nothing.


The continuationAction argument is Nothing.


The continuationOptions argument specifies an invalid value.


The tasks array is empty or contains a null value.

.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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