抽象工厂模式

定义：定义了一个接口用于创建相关或有依赖关系的对象族，而无需明确指定具体类。

// 抽象工厂模式
namespace ConsoleApp1
{
    public abstract class WatchFactory
    {
        public abstract void showPrice();
    }

    public abstract class PhoneFactory
    {
        public abstract void showPrice();
    }

    public class XMWatch : WatchFactory
    {
        public override void showPrice()
        {
            Console.WriteLine("XMWatch");
        }
    }

    public class HWPhone : PhoneFactory
    {
        public override void showPrice()
        {
            Console.WriteLine("HWPhone");
        }
    }

    public class HWWatch : WatchFactory
    {
        public override void showPrice()
        {
            Console.WriteLine("HWWatch");
        }
    }

    public class XMPhone : PhoneFactory
    {
        public override void showPrice()
        {
            Console.WriteLine("XMPhone");
        }
    }

    public interface IAbsFactory
    {
        WatchFactory createWatchFactory();

        PhoneFactory createPhoneFactory();
    }

    public class XMFactory : IAbsFactory
    {
        public WatchFactory createWatchFactory()
        {
            return new XMWatch();
        }
        public PhoneFactory createPhoneFactory()
        {
            return new XMPhone();
        }
    }

    public class HWFactory : IAbsFactory
    {
        public WatchFactory createWatchFactory()
        {
            return new HWWatch();
        }
        public PhoneFactory createPhoneFactory()
        {
            return new HWPhone();
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            XMFactory xmFactory = new XMFactory();
            ShowPrice(xmFactory);

            HWFactory hwFactory = new HWFactory();
            ShowPrice(hwFactory);
        }

        static void ShowPrice(IAbsFactory factory) {
            WatchFactory watchFactory = factory.createWatchFactory();
            PhoneFactory phoneFactory = factory.createPhoneFactory();
            watchFactory.showPrice();
            watchFactory.showPrice();
        }
    }
}