c# 将对象序列化和反序列化

[Serializable]
        class listData
        {
            public int ID{get;set;}
            public string Name{get;set;}
        }
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            List<listData> list = new List<listData>();
            for (int i = 0; i < 1000; i++)
            {
                listData d = new listData();
                d.ID = i;
                d.Name = "Name" + i.ToString();
            }
            BinaryFormatter bf = new BinaryFormatter();
            MemoryStream ms = new MemoryStream();
            bf.Serialize(ms, list);
            SaveFileDialog sf = new SaveFileDialog();
            sf.ShowDialog();
            File.WriteAllBytes(sf.FileName, ms.GetBuffer());            
        }

        private void button2_Click(object sender, EventArgs e)
        {
            OpenFileDialog open = new OpenFileDialog();
            open.ShowDialog();
            BinaryFormatter bf = new BinaryFormatter();
            
            MemoryStream ms = new MemoryStream(File.ReadAllBytes(open.FileName));
            foreach (listData ld in (List<listData>)bf.Deserialize(ms))
            {
                this.listBox1.Items.Add(ld);   
            }
            listBox1.DisplayMember = "Name";
            
        }