public static void registrate(string fullName, string email, string pass, RegistrationForm registrationForm) { try { dataService.addUser(fullName, email, pass); dataService.addSession(email, getMAC()); view.fromRegistrationToMainForm(registrationForm); } catch (Npgsql.PostgresException e) { registrationForm.showRegistrationError(); Console.WriteLine(e.MessageText); } catch (Exception e) { Console.WriteLine(e.ToString()); } }