第 8 章 工厂方法模式

    /// <summary>
    /// 雷锋
    /// </summary>
    public class LeiFeng
    {
        public void Wash()
        {
            Console.WriteLine("洗衣");
        }

        public void Sweep()
        {
            Console.WriteLine("扫地");
        }
    }

    /// <summary>
    /// 大学生
    /// </summary>
    public class Undergraduate : LeiFeng
    {

    }

    /// <summary>
    /// 社区志愿者
    /// </summary>
    public class CommunityVolunteer : LeiFeng
    {

    }

    /// <summary>
    /// 雷锋工厂
    /// </summary>
    interface IFactory
    {
        LeiFeng CreateLeiFeng();
    }


    /// <summary>
    /// 大学生雷锋工厂
    /// </summary>
    public class UndergraduateFactory : IFactory
    {
        public LeiFeng CreateLeiFeng()
        {
            return new Undergraduate();
        }
    }

    /// <summary>
    /// 社区志愿者雷锋工厂
    /// </summary>
    public class CommunityVolunteerFactory : IFactory
    {

        public LeiFeng CreateLeiFeng()
        {
            return new CommunityVolunteer();
        }
    }

IFactory factory = new UndergraduateFactory();
LeiFeng leifeng = factory.CreateLeiFeng();
leifeng.Sweep();
leifeng.Wash();

factory = new CommunityVolunteerFactory();
leifeng = factory.CreateLeiFeng();
leifeng.Sweep();
leifeng.Wash();