Article
11/17/2011

TaskFactory.ContinueWhenAll<TAntecedentResult, TResult> Method (array<Task<TAntecedentResult>[], Func<array<Task<TAntecedentResult>[], TResult>)

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Creates a continuation Task<TResult> 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, TResult) ( _
    tasks As Task(Of TAntecedentResult)(), _
    continuationFunction As Func(Of Task(Of TAntecedentResult)(), TResult) _
) As Task(Of TResult)

public Task<TResult> ContinueWhenAll<TAntecedentResult, TResult>(
    Task<TAntecedentResult>[] tasks,
    Func<Task<TAntecedentResult>[], TResult> continuationFunction
)

Type Parameters

TAntecedentResult
The type of the result of the antecedent tasks.

TResult
The type of the result that is returned by the continuationFunction delegate and associated with the created Task<TResult>.

Parameters

tasks
Type: array<System.Threading.Tasks.Task<TAntecedentResult>[]
The array of tasks from which to continue.

continuationFunction
Type: System.Func<array<Task<TAntecedentResult>[], TResult>
The function delegate to execute asynchronously when all tasks in the tasks array have completed.

Return Value

Type: System.Threading.Tasks.Task<TResult>
The new continuation Task<TResult>.

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 continuationFunction argument is null.
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.

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 continuationFunction argument is null.

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.

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.

Change History

Date	History	Reason
	Added text to clarify asynchronous execution of continuations.	Customer feedback.

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