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();        }    }