Serialisierung C#

using System;

using System.Collections.Generic;

using System.Linq;

using System.Windows.Forms;

using System.Runtime.Serialization.Formatters.Soap;

using System.IO;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using System.Net.NetworkInformation;

namespace WindowsFormsApplication1

{

    static class Program

    {

        static Configuration _configuration = new Configuration();

        const string fileName = @"c:\json.txt";

        /// <summary>

        /// Der Haupteinstiegspunkt für die Anwendung.

        /// </summary>

        [STAThread]

        static void Main()

        {

            //Ping Sender = new Ping();

            //PingReply Result = Sender.Send("173.194.59.94");

            //if (Result.Status == IPStatus.Success)

            //{

            //    MessageBox.Show("Erfolg");

            //}

            //else

            //{

            //    MessageBox.Show("Fehler");

            //}

            //string[] s = System.IO.Ports.SerialPort.GetPortNames();

            //foreach (string a in s)

            //{

            //    System.Diagnostics.Debug.Write(a+"\n");

            //}

            Application.EnableVisualStyles();

            Application.SetCompatibleTextRenderingDefault(false);

            ConfigurationForm configForm = new ConfigurationForm();

            Configuration copyConfig = _configuration.Clone();

            if (File.Exists(fileName))

            {

                string serializedConfiguration = string.Empty;

                using (var tf = File.OpenText(fileName))

                {

                    serializedConfiguration = tf.ReadToEnd();

                }

               copyConfig = Configuration.Deserialize(serializedConfiguration);

            }

            configForm.Configuration = copyConfig;

            DialogResult dr = configForm.ShowDialog();

            if (dr == DialogResult.OK)

            {

                _configuration = copyConfig;

            }

            string s = JsonConvert.SerializeObject(copyConfig);

            MessageBox.Show(s);

            using (var tf = File.CreateText(fileName))

            {

                tf.

                tf.Write(s);

            }

            //object o = JsonConvert.DeserializeObject(s);

            //var jo = (JObject)o;

            //object o2 = JsonConvert.DeserializeObject(s, typeof(Configuration));

            //configForm = new ConfigurationForm();

            //configForm.Configuration = (Configuration)o;

            //configForm.ShowDialog();

        }

    }

}