c＃浅拷贝与深拷贝自定义的类的List＜＞

 浅拷贝只需要直接赋值，

深拷贝需要写一个函数，通过序列化与反序列化将旧的list<>对象拷贝到新的List<>对象，具体代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace LstCopy
{
    public partial class Form1 : Form
    {
        [Serializable]
        public class USER
        {
            public string name;
            public int id;
        }
        public Form1()
        {
            InitializeComponent();
            List<USER> users = new List<USER>();
            for(int i=0;i< 10;i++)
            {
                USER user = new USER();
                user.name = "name" + i.ToString();
                user.id = i;
                users.Add(user);
            }
            List<USER> tempLst = Clone<USER>(users);//深拷贝
            //List<USER> tempLst = users;//浅拷贝
            tempLst = tempLst.FindAll(p=>p.id>5).ToList();
            tempLst[0].name = "changed";
        }
        public static List<T> Clone<T>(object List)
        {
            using (Stream objectStream = new MemoryStream())
            {
                IFormatter formatter = new BinaryFormatter();
                formatter.Serialize(objectStream, List);
                objectStream.Seek(0, SeekOrigin.Begin);
                return formatter.Deserialize(objectStream) as List<T>;
            }
        }
    }
}