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TaskFactory.ContinueWhenAll<TAntecedentResult> Method (array<Task<TAntecedentResult>[], Action<array<Task<TAntecedentResult>[]>, TaskContinuationOptions)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Creates a continuation Task that will be started upon the completion of a set of provided Tasks.

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

Syntax

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

public Task ContinueWhenAll<TAntecedentResult>(
    Task<TAntecedentResult>[] tasks,
    Action<Task<TAntecedentResult>[]> continuationAction,
    TaskContinuationOptions continuationOptions
)

Type Parameters

  • TAntecedentResult
    The type of the result of the antecedent tasks.

Parameters

  • continuationAction
    Type: System.Action<array<Task<TAntecedentResult>[]>
    The action delegate to execute when all tasks in the tasks array have completed.

Return Value

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

Exceptions

Exception Condition
ObjectDisposedException

The exception that is thrown when one of the elements in the tasks array has been disposed.
ArgumentNullException

The exception that is thrown when the tasks array is null.

-or-

The exception that is thrown when the continuationAction argument is null.
ArgumentOutOfRangeException

The exception that is thrown when the continuationOptions argument specifies an invalid TaskContinuationOptions value. The exception that is thrown when the creationOptions argument specifies an invalid TaskCreationOptions value. For more information, see the Remarks for FromAsync
ArgumentException

The exception that is thrown when the tasks array contains a null value.

-or-

The exception that is thrown when the tasks array is empty.

Remarks

The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

Version Information

Silverlight

Supported in: 5

Platforms

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