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

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

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

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

Type Parameters

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[]

The array of tasks from which to continue.

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

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

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.

Return Value

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

ExceptionCondition
ObjectDisposedException

An element in the tasks array has been disposed.

ArgumentNullException

The tasks array is null.

-or-

The continuationFunction argument is null.

ArgumentOutOfRangeException

The continuationOptions argument specifies an invalid value.

ArgumentException

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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