设计模式--组合模式

组合模式类似建造者模式

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

namespace CompositSample
{
    abstract class AbstractFile
    {
        public abstract void Add(AbstractFile file);
        public abstract void Remove(AbstractFile file);
        public abstract AbstractFile GetChild( int i);
        public abstract void KillVirus( );
    }
    class ImageFile:AbstractFile
    {
        private string Name;
        public ImageFile(string name)
        {
            this.Name = name;
        }
        public override void Add(AbstractFile file)
        {
            Console.WriteLine("对不起，不支持此方法");
        }
        public override void Remove(AbstractFile file)
        {
            Console.WriteLine("对不起，不支持此方法");
        }
        public override AbstractFile GetChild(int i)
        {
            Console.WriteLine("对不起，不支持此方法");
            return null;
        }
        public override void KillVirus()
        {
            Console.WriteLine($"对图像文件{Name}进行查杀");
        }
    }
    class TextFile : AbstractFile
    {
        private string Name;
        public TextFile(string name)
        {
            this.Name = name;
        }
        public override void Add(AbstractFile file)
        {
            Console.WriteLine("对不起，不支持此方法");
        }
        public override void Remove(AbstractFile file)
        {
            Console.WriteLine("对不起，不支持此方法");
        }
        public override AbstractFile GetChild(int  i)
        {
            Console.WriteLine("对不起，不支持此方法");
            return null;
        }
        public override void KillVirus()
        {
            Console.WriteLine($"对文本文件{Name}进行查杀");
        }
    }
    class Fold:AbstractFile
    {
        private List<AbstractFile> fildlist = new List<AbstractFile>();
        private string Name;
        public Fold(string name)
        {
            this.Name = name;
        }
        public override void Add(AbstractFile file)
        {
            fildlist.Add(file);
        }
        public override void Remove(AbstractFile file)
        {
            fildlist.Remove(file);
        }
        public override AbstractFile GetChild(int  i)
        {
           
            return fildlist[i];
        }
        public override void KillVirus()
        {
            Console.WriteLine($"对文件夹{Name}进行查杀");
            foreach(var i in fildlist)
            {
                i.KillVirus();
            }
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            AbstractFile file1, file2, file3, file4, fold1;
            fold1 = new Fold("我的资料");
            file1 = new ImageFile("图片1.jpg");
            file2 = new ImageFile("图片2.gnd");
            file3 = new TextFile("文档1");
            file4 = new TextFile("文档2");
            fold1.Add(file1);
            fold1.Add(file2);
            fold1.Add(file3);
            fold1.Add(file4);
            fold1.KillVirus();
            fold1.Remove(file2);
            fold1.KillVirus();
            Console.Read();
            
        }
    }
}