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TaskFactory.ContinueWhenAll<TAntecedentResult, TResult> Method (Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[], TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler)

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 Task<TResult> ContinueWhenAll<TAntecedentResult, TResult>(
	Task<TAntecedentResult>[] tasks,
	Func<Task<TAntecedentResult>[], TResult> continuationFunction,
	CancellationToken cancellationToken,
	TaskContinuationOptions continuationOptions,
	TaskScheduler scheduler
)

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.

Parameters

tasks
Type: System.Threading.Tasks.Task<TAntecedentResult>[]

The array of tasks from which to continue.

continuationFunction
Type: System.Func<Task<TAntecedentResult>[], TResult>

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

cancellationToken
Type: System.Threading.CancellationToken

The cancellation token to assign to the new continuation task.

continuationOptions
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.

scheduler
Type: System.Threading.Tasks.TaskScheduler

The object that is used to schedule the new continuation task.

Return Value

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

ExceptionCondition
ArgumentNullException

The tasks array is null.

-or-

The continuationFunction argument is null.

-or-

The scheduler argument is null.

ArgumentException

The tasks array is empty or contains a null value.

ArgumentOutOfRangeException

The continuationOptions argument specifies an invalid value.

ObjectDisposedException

An element in the tasks array has been disposed.

-or-

The CancellationTokenSource that created cancellationToken has already been disposed.

.NET Framework

Supported in: 4.5.3, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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