public Size GetDeviceResolution()
        {
            Size resolution = Size.Empty;
            var rawPixelsPerViewPixel = DisplayInformation.GetForCurrentView().RawPixelsPerViewPixel;
            foreach (var item in PointerDevice.GetPointerDevices())
            {
                resolution.Width = item.ScreenRect.Width * rawPixelsPerViewPixel;
                resolution.Height = item.ScreenRect.Height * rawPixelsPerViewPixel;
                break;
            }
            return resolution;
        }