public static bool TrySetFromTask<TResult>(
	this TaskCompletionSource<TResult> taskCompletionSource,
	Task task,
	TResult result
)

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

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

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

Parameters

taskCompletionSource

Type: System.Threading.TasksTaskCompletionSourceTResult
The TaskCompletionSourceTResult instance.

task

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

result

Type: TResult
The result of the completion source when the specified task completed successfully.

Type Parameters

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 specified result value 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