C#建造者模式

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SharpConsole
{

    public abstract class People
    {
        public abstract void Display();
        public abstract void ShowMsg();
    }

 

    public class Doctor : People
    {
        public override void Display()
        {
            Console.WriteLine("Doctor Display");
        }

        public override void ShowMsg()
        {
            Console.WriteLine("Doctor Display");
        }
    }

    public class Worker : People
    {
        public override void Display()
        {
            Console.WriteLine("Worker Display");
        }

        public override void ShowMsg()
        {
            Console.WriteLine("Worker Display");
        }
    }

    public class Director
    {
        private People people;
        public Director(People people)
        {
            this.people = people;
        }

        public void ShowMsg()
        {
            people.Display();
            people.ShowMsg();
        }

    }
    class Program
    {
        static void Main(string[] args)
        {
            Worker worker = new Worker();
            Doctor doctor = new Doctor();
            Director director = new Director(worker);
            director.ShowMsg();

            director = new Director(doctor);
            director.ShowMsg();

            Console.Read();
        }
    }
}