private void LoginButton_Click(object sender, RoutedEventArgs e)
        {
            ToastController toastController;
            string          userName = UserNameTextBox.Text;
            string          passWord = PassWordTextBox.Password;

            Sock   sock   = new Sock(userName, passWord, testHost, port);
            Status status = Status.NONE;

            status = sock.Login(userName, passWord);
            if (status == Status.LOGIN_AC)
            {
                //储存到全局变量中
                ConstantVariable.ConstantVariable.sock = sock;
                Frame root = Window.Current.Content as Frame;
                //root.Navigate(typeof(CommunicatePage),sock);
                root.Navigate(typeof(CommunicatePage));
                //sock.start();
            }
            else if (status == Status.WRONG_PASSWORD)
            {
                toastController = new ToastController("Login Failure!Please check the password");
                toastController.Show();
            }
            else if (status == Status.NO_MEMSHIP)
            {
                toastController = new ToastController("No Memship!Please register and try again!");
                toastController.Show();
            }
        }