static void Main(string[] args)
        {
            List<Person> persons = new List<Person>();
            Person p1 = new Person("chen", 24);
            Person p2 = new Person("li", 23);
            persons.Add(p1);
            persons.Add(p2);

            xuliehua(persons); //调用静态序列化方法
            fanxuliehua();       //调用静态反序列化方法

            Console.ReadKey();
        }

public static void xuliehua(List<Person> persons)//序列化方法
        {
            FileStream fs = new FileStream("Person.txt", FileMode.Create);//创建一个文件流，对文件进行写入
            BinaryFormatter bf = new BinaryFormatter();//使用CLR二进制格式器
            bf.Serialize(fs, persons); //序列化到硬盘
            fs.Close();//关闭文件流
        }

public static void fanxuliehua()//反序列化方法
        {
            FileStream fs = new FileStream("Person.txt", FileMode.Open);//打开流文件
            BinaryFormatter bf = new BinaryFormatter();
            List<Person> persons = bf.Deserialize(fs) as List<Person>;//从硬盘反序列化  

            //或  Person p=(Person)bf.Deserialize(fs); 对应上面的或者

            fs.Close();//关闭文件流
            for (int i = 0; i < persons.Count; i++)
            {
                persons[i].say();
            }
        }

　　[Serializable] 
    class Person
    {
        private string name;
        public string Name
        {
            get { return name; }
            set { name = value; }
        }

        [NonSerialized]   //age这个字段不序列化
        private int age;
        public int Age
        {
            get { return age; }
            set { age = value; }
        }

        public Person() { }
        public Person(string name, int age)
        {
            this.name = name;
            this.age = age;
        }

        public void say()
        {
            Console.WriteLine("hello,my name is {0} ,I am {1} years old.", name, age);
        } 
    }