面向对象设计与分析的一个小问题.
本人菜鸟,说错了的,请指教.

一个很简单的功能,但是要遵循面向对象原则,现在能实现的是按下按钮,如果门是开的,则关上,如果是关的,则打开,但是现在需要这样:"门是开的,则关上,如果是关的,则打开"这里相同,但是,打开门口,隔10秒,门会自动关闭,.!

一下是现功能代码,表达的不是很好,.
DogDoor.cs:
namespace DogDoor
{
    public class DogDoor
    {
        public static Boolean open;

        public DogDoor()
        {
            //
        }

        public bool toOpen()
        {
            open = true;
            return open;
        }
        public bool toClose()
        {
            open = false;
            return open;
        }
        public Boolean isOpen()
        {
            return open;
        }
    }
}
Remote.cs:
public class Remote
    {
        private DogDoor door;

        public Remote(DogDoor door)
        {
            this.door = door;
        }

        public bool pressButton()
        {
            
            if (door.isOpen() == true)
            {
                return this.door.toClose();
                
            }
            else
            {
                return this.door.toOpen();
            }
        }
    }
下面是页面代码:
public partial class DoorTest : System.Web.UI.Page
    {
        DogDoor door = new DogDoor();

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {