public static bool TrySetFromTask<TSource, TResult>(
	this TaskCompletionSource<TResult> taskCompletionSource,
	Task<TSource> task
)
where TSource : TResult

<ExtensionAttribute>
Public Shared Function TrySetFromTask(Of TSource As TResult, TResult) ( 
	taskCompletionSource As TaskCompletionSource(Of TResult),
	task As Task(Of TSource)
) As Boolean

public:
[ExtensionAttribute]
generic<typename TSource, typename TResult>
where TSource : TResult
static bool TrySetFromTask(
	TaskCompletionSource<TResult>^ taskCompletionSource, 
	Task<TSource>^ task
)

[<ExtensionAttribute>]
static member TrySetFromTask : 
        taskCompletionSource : TaskCompletionSource<'TResult> * 
        task : Task<'TSource> -> bool  when 'TSource : 'TResult

Parameters

taskCompletionSource

Type: System.Threading.TasksTaskCompletionSourceTResult
The TaskCompletionSourceTResult instance.

task

Type: System.Threading.TasksTaskTSource
The result task whose completion results should be transferred.

Type Parameters

TSource

Specifies the result type of the source TaskTResult.

TResult

Specifies the result type of the TaskCompletionSourceTResult.

Return Value

if the operation was successful.

-or-

if the operation was unsuccessful or the object has already been disposed.

Usage Note

This method will return if the TaskTResult provided by taskCompletionSource is already in one of the three final states: RanToCompletion, Faulted, or Canceled. This method also returns if the underlying TaskTResult has already been disposed.

If task is in the RanToCompletion state, the result of the task is assigned to the TaskCompletionSourceTResult using the TrySetResult(TResult) method.

If task is in the Faulted state, the unwrapped exceptions are bound to the TaskCompletionSourceTResult using the TrySetException(IEnumerableException) method.

If task is in the Canceled state, the TaskCompletionSourceTResult is transitioned to the Canceled state using the TrySetCanceled method.

.NET for Windows Store apps

.NET Framework

Portable Class Library

Threading Library

Reference