C#设计模式之【组合模式】

【实例截图】

【核心代码】

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

namespace 组合模式
{
    class Program
    {
        static void Main(string[] args)
        {
            ConcreteCompany root = new ConcreteCompany("北京总公司");
            root.Add(new HRDepartment("总公司人力资源部"));
            root.Add(new FinanceDepartment("总公司财务部"));

            ConcreteCompany comp = new ConcreteCompany("上海华东分公司");
            comp.Add(new HRDepartment("华东分公司人力资源部"));
            comp.Add(new FinanceDepartment("华东分公司财务部"));
            root.Add(comp);

            ConcreteCompany comp1 = new ConcreteCompany("南京办事处");
            comp1.Add(new HRDepartment("南京办事处人力资源部"));
            comp1.Add(new FinanceDepartment("南京办事处财务部"));
            comp.Add(comp1);

            ConcreteCompany comp2 = new ConcreteCompany("杭州办事处");
            comp2.Add(new HRDepartment("杭州办事处人力资源部"));
            comp2.Add(new FinanceDepartment("杭州办事处财务部"));
            comp.Add(comp2);


            Console.WriteLine("\n结构图：");

            root.Display(1);

            Console.WriteLine("\n职责：");

            root.LineOfDuty();


            Console.Read();
        }
    }

    abstract class Company
    {
        protected string name;

        public Company(string name)
        {
            this.name = name;
        }

        public abstract void Add(Company c);//增加
        public abstract void Remove(Company c);//移除
        public abstract void Display(int depth);//显示
        public abstract void LineOfDuty();//履行职责

    }

    class ConcreteCompany : Company
    {
        private List<Company> children = new List<Company>();

        public ConcreteCompany(string name)
            : base(name)
        { }

        public override void Add(Company c)
        {
            children.Add(c);
        }

        public override void Remove(Company c)
        {
            children.Remove(c);
        }

        public override void Display(int depth)
        {
            Console.WriteLine(new String('-', depth)   name);

            foreach (Company component in children)
            {
                component.Display(depth   2);
            }
        }

        //履行职责
        public override void LineOfDuty()
        {
            foreach (Company component in children)
            {
                component.LineOfDuty();
            }
        }

    }

    //人力资源部
    class HRDepartment : Company
    {
        public HRDepartment(string name)
            : base(name)
        { }

        public override void Add(Company c)
        {
        }

        public override void Remove(Company c)
        {
        }

        public override void Display(int depth)
        {
            Console.WriteLine(new String('-', depth)   name);
        }


        public override void LineOfDuty()
        {
            Console.WriteLine("{0} 员工招聘培训管理", name);
        }
    }

    //财务部
    class FinanceDepartment : Company
    {
        public FinanceDepartment(string name)
            : base(name)
        { }

        public override void Add(Company c)
        {
        }

        public override void Remove(Company c)
        {
        }

        public override void Display(int depth)
        {
            Console.WriteLine(new String('-', depth)   name);
        }

        public override void LineOfDuty()
        {
            Console.WriteLine("{0} 公司财务收支管理", name);
        }

    }
}