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

Creates a continuation TaskFactory<TResult> that will be started upon the completion of a set of provided Tasks.

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

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

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
The TaskContinuationOptions value that controls the behavior of the created continuation TaskFactory<TResult>.

Return Value

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

ExceptionCondition
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.

ArgumentOutOfRangeException

The exception that is thrown when the continuationOptions argument specifies an invalid TaskContinuationOptions value.

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.

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

After completion, a task is in one of these states: RanToCompletion, Faulted, or Canceled states.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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