using System;

using System.IO;

using System.Runtime.Serialization.Formatters.Binary;

​

namespace WindowsFormsApp2

{

    // Note class to be serialized

    [Serializable]  // only needed for BinaryFormatter

    public class Note

    {

        public string Name { get; set; }

        public string Text { get; set; }

    }

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

​

        private void button1_Click(object sender, EventArgs e)

        {

            if (saveFileDialog1.ShowDialog() != DialogResult.OK) return;

​

            var newNote = new Note()

            {

                Name = textBox1.Text,

                Text = textBox2.Text

            };

​

            string path = saveFileDialog1.FileName;

            using (var fs = File.OpenWrite(path))

            {

                //var xml = new XmlSerializer( typeof(Note) );

                //xml.Serialize(fs, newNote);

​

                var bf = new BinaryFormatter();

                bf.Serialize(fs, newNote);

            }

        }

​

        private void button2_Click(object sender, EventArgs e)

        {

            if (openFileDialog1.ShowDialog() != DialogResult.OK) return;

​

            string path = openFileDialog1.FileName;

            using (var fs = File.OpenRead(path))

            {

                //var xml = new XmlSerializer(typeof(Note));

                //var note = xml.Deserialize(fs) as Note;

​

                var bf = new BinaryFormatter();

                var note = bf.Deserialize(fs) as Note;

​

                if(note != null)

                {

                    textBox1.Text = note.Name;

                    textBox2.Text = note.Text;

                }

            }

​

        }

    }

}

​