public static Task<TResult[]> WhenAll<TResult>(
	params Task<TResult>[] tasks
)

Public Shared Function WhenAll(Of TResult) ( 
	ParamArray tasks As Task(Of TResult)()
) As Task(Of TResult())

public:
generic<typename TResult>
static Task<array<TResult>^>^ WhenAll(
	... array<Task<TResult>^>^ tasks
)

static member WhenAll : 
        tasks : Task<'TResult>[] -> Task<'TResult[]> 

Parameters

tasks

Type: System.Threading.TasksTaskTResult
The tasks to wait on for completion.

Type Parameters

TResult

The type of the completed task.

Return Value

If none of the supplied tasks faulted but at least one of them was canceled, the returned task will end in the Canceled state.

If none of the tasks faulted and none of the tasks were canceled, the resulting task will end in the RanToCompletion state. The Result of the returned task will be set to an array containing all of the results of the supplied tasks in the same order as they were provided (e.g. if the input tasks array contained t1, t2, t3, the output task's Result will return an TResult[] where arr[0] == t1.Result, arr[1] == t2.Result, and arr[2] == t3.Result).

If the supplied array/enumerable contains no tasks, the returned task will immediately transition to a RanToCompletion state before it's returned to the caller. The returned TResult[] will be an array of 0 elements.

.NET for Windows Store apps

.NET Framework

Portable Class Library

Rackspace Threading Library

Reference