16. STATUS 비교
From TaskStatus To AsyncStatus
RanToCompletion Completed
Faulted Error
Canceled Canceled
All other values & cancellation was requested Canceled
All other values & cancellation was not requested Started
17. AsAsyncOperation()
WinRT용
IAsync 라이브러리를 제작
IAsyncOperation Task 한다면
보다 많은 제공. operation IAsyncOperation
타입을 반환해야 함.
AsTask()