C#如何移动根据所面对的方向改变图像的图片框？

enum Direction
{
    Up,
    Down,
    Left,
    Right
}

switch (currentDirection)
{
    case Direction.Up:
        pictureBox.Image = Properties.Resources.UpImage; // 设置为向上的图像
        break;
    case Direction.Down:
        pictureBox.Image = Properties.Resources.DownImage; // 设置为向下的图像
        break;
    case Direction.Left:
        pictureBox.Image = Properties.Resources.LeftImage; // 设置为向左的图像
        break;
    case Direction.Right:
        pictureBox.Image = Properties.Resources.RightImage; // 设置为向右的图像
        break;
}

currentDirection = Direction.Left;