超级工厂模式

 public interface ISalary
    {
        void CommandSalary();
    }

public abstract class ShenZhenSalary : ISalary
    {
        public virtual void CommandSalary()
        {
            Console.WriteLine("这是深圳子公司的工资计算模块");
        }
    }

 public abstract class BeiJinSalary : ISalary
    {
        public virtual void CommandSalary()
        {
            Console.WriteLine("这是北京子公司的工资计算模块");
        }
    }

public class BeiJinItdSalary : BeiJinSalary
    {
        public override void CommandSalary()
        {
            Console.WriteLine("这是北京子公司ITD的工资计算模块");
        }
    }

    public class BeiJinHraSalary : BeiJinSalary
    {
        public override void CommandSalary()
        {
            Console.WriteLine("这是北京子公司HRA的工资计算模块");
        }
    }

public class ShenZhenItdSalary : ShenZhenSalary
    {
        public override void CommandSalary()
        {
            Console.WriteLine("这是深圳子公司ITD的工资计算模块");
        }
    }

    public class ShenZhenHraSalary : ShenZhenSalary
    {
        public override void CommandSalary()
        {
            Console.WriteLine("这是深圳子公司HRA的工资计算模块");
        }
    }

public interface IFactory
    {
        ShenZhenSalary CreateShenZhenSalary();
        BeiJinSalary CreateBeiJinSalary();
    }

public class ItdFactory : IFactory
    {
        public ShenZhenSalary CreateShenZhenSalary()
        {
            return new ShenZhenItdSalary();
        }
        public BeiJinSalary CreateBeiJinSalary() 
        {
            return new BeiJinItdSalary();
        }
    }

public class HraFactory:IFactory
    {
       public ShenZhenSalary CreateShenZhenSalary()
       {
           return new ShenZhenHraSalary();
       }
       public BeiJinSalary CreateBeiJinSalary()
       {
           return new BeiJinHraSalary();
       }
    }

class Program
    {
        public static void Main(string[] args)
        {
            IFactory Factory = new ItdFactory();  //实例化Itd工厂类
            ShenZhenSalary SalarySzItd = Factory.CreateShenZhenSalary();
            SalarySzItd.CommandSalary(); //调用深圳ITD公司计算过程

            BeiJinSalary SalaryBjItd = Factory.CreateBeiJinSalary();
            SalaryBjItd.CommandSalary(); //调用北京ITD公司计算过程

            Factory = new HraFactory(); //实例化Hra工厂类
            ShenZhenSalary SalarySzHra = Factory.CreateShenZhenSalary();
            SalarySzHra.CommandSalary(); //调用深圳Hra公司计算过程

            BeiJinSalary SalaryBjHra = Factory.CreateBeiJinSalary();
            SalaryBjHra.CommandSalary(); //调用北京Hra公司计算过程

            Console.ReadLine();
        }
    }