一个用C#表述的精妙的foreach模式

最新推荐文章于 2024-08-11 00:45:04 发布

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最新推荐文章于 2024-08-11 00:45:04 发布

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分类专栏：设计模式文章标签： c# server class application manager string

本文链接：https://blog.youkuaiyun.com/sharpnessdotnet/article/details/2046476

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本文通过一个C#实现的工厂模式示例，展示了如何利用基类与派生类之间的继承关系来创建不同类型的对象，并通过一个Server类来统一调用这些对象的方法。示例中包括初始化、执行和释放资源三个阶段。

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public class Factory
  {
            public virtual void Free()
            {
                        Console.WriteLine("Factory.Free");
            }
            public virtual void Init()
            {
                        Console.WriteLine("Factory.Init");
            }
            public virtual void Execute()
            {
                        Console.WriteLine("Factory.Execute");
            }
  }
  public class Factory1:Factory
  {
            public override void Free()
            {
                        base.Free();
                        Console.WriteLine("Factory1.Free");
            }
            public override void Init()
            {
                        base.Init();
                        Console.WriteLine("Factory1.Init");
            }
  }
  public class Factory2:Factory
  {
            public override void Free()
            {
                        base.Free();
                        Console.WriteLine("Factory2.Free");

            }
            public override void Init()
            {
                        base.Init();
                        Console.WriteLine("Factory2.Init");
            }
  }

  public class Server
  {
            public void FreeServer()
            {
                        Manager.ForeachFactory(this,new Manager.FacotryPro(FactoryFree));
            }
            public void InitServer()
            {
                        Manager.ForeachFactory(this,new Manager.FacotryPro(FactoryInit));
            }
            public void Execute()
            {
                        Manager.ForeachFactory(this,new Manager.FacotryPro(FactoryExecte));
            }
            protected void FactoryExecte(Factory factory)
            {
                        factory.Execute();
            }
            protected void FactoryFree(Factory factory)
            {
                        factory.Free();
            }
            protected void FactoryInit(Factory factory)
            {
                        factory.Init();
            }
  }
  public class Manager
  {
            public delegate void FacotryPro(Factory factory);
            public static Factory[] GetFactories(){return new Factory[]{new Factory1(),new Factory2()};}
            public static void ForeachFactory(Server server,FacotryPro factoryPro)
            {
                        Factory[] factories = GetFactories();
                        foreach(Factory factory in factories)
                        {
                                    factoryPro(factory);
                        }
            }
}
  class Application
  {
            [STAThread]
            static void Main(string[] args)
            {
                        Server curServer = new Server();
                        Console.WriteLine("begin server init...");
                        curServer.InitServer();
                        Console.WriteLine("execute...");
                        curServer.Execute();
                        Console.WriteLine("begin server free...");
                        curServer.FreeServer();
                        Console.Read();
            }
  }