禁止使用鼠标滚轮操作 FlipView

FlipViewHelper.cs

public static class FlipViewHelper
{
    public static bool GetAllowPointerWheelFlip(FlipView obj)
    {
        return (bool)obj.GetValue(AllowPointerWheelFlipProperty);
    }

    public static void SetAllowPointerWheelFlip(FlipView obj, bool value)
    {
        obj.SetValue(AllowPointerWheelFlipProperty, value);
    }

    public static readonly DependencyProperty AllowPointerWheelFlipProperty =
        DependencyProperty.RegisterAttached("AllowPointerWheelFlip", typeof(bool), typeof(BlankPage2), new PropertyMetadata(true, (s, a) =>
        {
            if (s is FlipView sender && !Equals(a.NewValue, a.OldValue))
            {
                sender.Loaded -= FlipView_Loaded;
                sender.Loaded += FlipView_Loaded;

                UpdateIsPointerWheelEnabled(sender);
            }
        }));

    private static void FlipView_Loaded(object sender, RoutedEventArgs e)
    {
        UpdateIsPointerWheelEnabled((FlipView)sender);
    }

    private static void UpdateIsPointerWheelEnabled(FlipView flipView)
    {
        if (flipView == null) return;

        if (VisualTreeHelper.GetChildrenCount(flipView) > 0)
        {
            var layoutRoot = (FrameworkElement)VisualTreeHelper.GetChild(flipView, 0);
            layoutRoot.PointerWheelChanged -= LayoutRoot_PointerWheelChanged;
            layoutRoot.PointerWheelChanged += LayoutRoot_PointerWheelChanged;
        }
    }

    private static void LayoutRoot_PointerWheelChanged(object sender, PointerRoutedEventArgs e)
    {
        if (sender is FrameworkElement fe)
        {
            if (VisualTreeHelper.GetParent(fe) is FlipView flipView)
            {
                if (!GetAllowPointerWheelFlip(flipView))
                {
                    e.Handled = true;
                }
            }
            else
            {
                fe.PointerWheelChanged -= LayoutRoot_PointerWheelChanged;
            }
        }
    }
}