public void DisplayImage(Bitmap bitmap, int window)
        {
            ImageSource source = fileOperation.BitmapToBitmapImage(bitmap);

            if (window == 1)
            {
                UserControl.imageOriginal.Source = source;
            }
            else if (window == 2)
            {
                UserControl.imageManipulated.Source = source;
            }
            else if (window == 3)
            {
                UserControl.imageOriginal.Source    = source;
                UserControl.imageManipulated.Source = source;
            }
        }