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

member ContinueWhenAll : 
        tasks:Task<'TAntecedentResult>[] * 
        continuationFunction:Func<Task<'TAntecedentResult>[], 'TResult> * 
        continuationOptions:TaskContinuationOptions -> Task<'TResult> 

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.

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 a null reference (Nothing in Visual Basic).

-or-

The continuationFunction argument is a null reference (Nothing in Visual Basic).

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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