一、概念：将对象的创建交给一个叫做工厂的对象来统一进行处理。主要是将对象的依赖关系进行解耦，消除对象之间的直接耦合。

二、模型：

1、逻辑模型

2、物理模型

 

三、代码实现：

1、抽象工厂代码：

using System;  using System.Collections.Generic;  using System.Text;   namespace ConsoleApplication1  {      /// 
      /// 水果抽象工厂      /// 
      public abstract class FruitAbstractFactory      {          /// 
          /// 水果名称，表示哪种水果如：苹果、香蕉、橘子          /// 
          public string FruitName { get; set; }          /// 
          /// 抽象方法，获取要批发水果的          /// 
          /// 
     
      要批发的水果
               public abstract string GetCurrentFruit();      }  }

2、苹果工厂代码

using System;  using System.Collections.Generic;  using System.Text;   namespace ConsoleApplication1  {      /// 
      /// 苹果工厂      /// 
      public class AppleFactory : FruitAbstractFactory      {          public AppleFactory()          {              FruitName = "苹果";          }          /// 
          /// 重写基类的获取水果方法          /// 
          /// 
     
      要批发的水果
               public override string GetCurrentFruit()          {              return "给你:" + base.FruitName;          }      }  }

3、香蕉工厂代码

using System;  using System.Collections.Generic;  using System.Text;   namespace ConsoleApplication1  {      /// 
      /// 香蕉工厂      /// 
      public class BananaFactory : FruitAbstractFactory      {          public BananaFactory()          {              FruitName = "香蕉";          }           public override string GetCurrentFruit()          {              return "给你:" + base.FruitName;          }      }  }

4、橘子工厂代码

using System;  using System.Collections.Generic;  using System.Text;   namespace ConsoleApplication1  {      /// 
      /// 橘子工厂      /// 
      public class TangerineFactory : FruitAbstractFactory      {          public TangerineFactory()          {              FruitName = "橘子";          }          public override string GetCurrentFruit()          {              return "给你:" + base.FruitName;          }      }  }

5、模拟调用代码

using System;  using System.Collections.Generic;  using System.Text;   namespace ConsoleApplication1  {      class Program      {          static void Main(string[] args)          {              FruitAbstractFactory fruitfactory = new AppleFactory();//苹果工厂              Console.WriteLine(fruitfactory.GetCurrentFruit());              Console.ReadLine();              fruitfactory = new BananaFactory();//香蕉工厂              Console.WriteLine(fruitfactory.GetCurrentFruit());              Console.ReadLine();              fruitfactory = new TangerineFactory();//橘子工厂              Console.WriteLine(fruitfactory.GetCurrentFruit());              Console.ReadLine();          }      }  }