Câu 16: 70-357: Developing Mobile Apps

You are developing a Universal Windows Platform (UWP) app. You need to provide a solution that moves the scroll bars of the ScrollViewer when a user rotates the mouse wheel. Which two actions should you perform? Each correct answer presents part of the solution.

1. A. Evaluate the CurrentPoint.Properties.MouseWheelDelta property of the PointerEvenArgs object. Call the ChangeView() method of the ScrollViewer.
2. B. Update the XAML of the ScrollViewer to include the PointerWheelChanged event with a new event handler. Evaluate the Pointer.IsInRange property of the PointerRoutedEventArgs object within the event handler. Call the ChangeView() method of the ScrollViewer.
3. C. Add an event handler to the PointerRoutedAway event for the current window. — đáp án hiện tại
4. D. Evaluate the CurrentPoint.Properties.IsHorizontalMouseWheel property of the PointerEventArgs object. Call the ChangeView() method of the ScrollViewer. — đáp án hiện tại
5. E. Add an event handler to the PointerWheelChanged event for the current window.