if (client.ifConnect == false)
        ConnectBtn.Click += Connect_Click;
        if (client.ifConnect)
            AutorizatBtn.Click += Autorizat_Click;



    private void Autorizat_Click(object sender, RoutedEventArgs e)
    {
       string userName = UserNameTxt.Text;

        if (client.Authorizat(userName))
        {
            NavigationService nav = NavigationService.GetNavigationService(this);
            nav.Navigate(new Uri("/Page1.xaml", UriKind.Relative));
        }
       else
        {
            AutorizatTextBlock.Text = "Неверное имя или пароль";

        };
    }

    private void Connect_Click(object sender, RoutedEventArgs e)
    {
        client.Connect();
        if (client.ifConnect)
            AutorizatTextBlock.Text = "Успешное подключение";
        else AutorizatTextBlock.Text = "Сервер не доступен";
    }


public void Connect ()
        {
        try
        {
            if (!ifConnect)
            {
                client = new TcpClient(address, port);
                stream = client.GetStream();
                ifConnect = true;
            }
        }
        catch (Exception ex)
        {
            ifConnect = false;
        }
    }