C#中怎样实现序列化和反序列化

 //说明该类可以被序列化
    [Serializable]
   public class Peoson
    {
        private int age;
        private string name;
        public int Age
        {
            get { return age; }
            set { age = value; }
        }
        public string Name
        {
            get { return name; }
            set { name = value; }
        }

        public Peoson() { }
        public Peoson(string name,int age) {
            this.age = age;
            this.name = name;
        }
        public void say() {
            Console.WriteLine("名字：{0}，年龄{1}",name,age);
        }

    }

static void Main(string[] args)
        {
            //准备集合并为其添加数据
            List list = new List();
            Peoson p1 = new Peoson("小黄", 18);
            Peoson p2 = new Peoson("小白", 28);
            Peoson p3 = new Peoson("小青", 15);
           
            list.Add(p1);
            list.Add(p2);
            list.Add(p3);

            //序列化
            SerializeMethod(list);

            //反序列化
          List list2=  ReserializeMethod();//调用反序列化的方法  其方法返回值是一个List集合
          foreach (Peoson item in list2)//遍历集合中的元素
          {
              item.say();
          }

          Console.ReadKey();

        }

        //序列化操作
        public static void SerializeMethod(List list) {
            using (FileStream fs=new FileStream("序列化.btn",FileMode.Create))
            {
                BinaryFormatter bf = new BinaryFormatter();
                bf.Serialize(fs,list);
                Console.WriteLine("序列化成功!");
           }
        }

        //反序列化操作
        public static List ReserializeMethod()
        { 
            using(FileStream fs=new FileStream("序列化.btn",FileMode.Open)){

                BinaryFormatter bf = new BinaryFormatter();
                List list = (List)bf.Deserialize(fs);
                return list;
            }
        }
    }