抽象工厂模式

  在公司这几天一直都在看程序设计模式,看完的之后感觉还是似懂非懂,但心得还是颇多,程序设计中使用的原则有一条:面向接口编程,而且在设计过程中,要保证能在可以很方便的对程序进行拓展,而且不用改动现有的程序.下面是我自己设计的一个抽象工作模式,不知道我的理解是否正确.
 
 
 
using System;
 using System.Collections.Generic;
 using System.Text;
 
namespace 抽象工厂模式
 {
     class Program
     {
         static void Main(string[] args)
         {
             CreateHouse newhouse = new CreateHouse(new CreateCountrysideHouse());
             newhouse.dispaly();
             Console.ReadKey();
         }
     }
 
    //建造房子的接口
     public interface ICreateHouse
     {
         //创建房子框架
         void createFrame();
         //创建房子的门
         void createDoor(); 
        //创建房子的窗
         void createWindow();
         //创建房子
         void display();
     }
 
    //农村风格
     public class CreateCountrysideHouse : ICreateHouse
     {
         public void createFrame()
         {
             Console.WriteLine("this is Countryside Frame");
         }
         public void createDoor()
         {
             Door door = new CountrysideDoor();
             door.dispaly();
         }
         public void createWindow()
         {
             Console.WriteLine("this is Countryside Window");
         }
         public void display()
         {
             this.createFrame();
             this.createDoor();
             this.createWindow();
         }
     }
 
    //城市风格
     public class CreateCityHouse : ICreateHouse
     {
         public void createFrame()
         {
             Console.WriteLine("this is City Frame");
         }
         public void createDoor()
         {
             //Console.WriteLine("this is City Door");
             Door door = new CityDoor();
             door.dispaly();
         }
         public void createWindow()
         {
             Console.WriteLine("this is City Window");
         }
         public void display()
         {
             this.createFrame();
             this.createDoor();
             this.createWindow();
         }
     }
 
    public class CreateHouse
     {
         private ICreateHouse iCreateHouse;
         public CreateHouse(ICreateHouse iCreateHouse)
         {
             this.iCreateHouse = iCreateHouse;
         }
         public void dispaly()
         {
             iCreateHouse.display();
         }
     }
 
    //门的基类
     public abstract class Door
     {
         //锁
         public void Locker()
         {
             Console.WriteLine("this is Door have Locker");
         }
         //门的形状
         public abstract void shape();
         public void dispaly()
         {
             this.Locker();
             this.shape();
         }
     }
 
    //农村门
     public class CountrysideDoor : Door
     {
         public override void shape()
         {
             Console.WriteLine("this is Countryside Door");
         }
     }
     //城市门
     public class CityDoor : Door
     {
         public override void shape()
         {
             Console.WriteLine("this is City Door");
         }
     }
 }