public Form1() { if (File.Exists("config.bin")) { FileStream fs = new FileStream("config.bin", FileMode.Open); BinaryFormatter formatter = new BinaryFormatter(); config = (Configuration) formatter.Deserialize(fs); fs.Close(); } else config = new Configuration(); listener = new TcpListener(config.get_ip(), config.get_port()); InitializeComponent(); bServerStop.Enabled = false; }