public RegistrationFormViewModel()
        {
            ClickCloseCommand = new RelayCommand(arg => ClickCloseMethod());

            var servicesFactory = new ServicesFactory();
            _userService = servicesFactory.GetUserService();
        }
        public AutorizationFormViewModel()
        {
            ClickSignInCommand = new RelayCommand(arg => ClickSignInMethod());
            ClickRegisterCommand = new RelayCommand(arg => ClickRegisterMethod());

            var servicesFactory = new ServicesFactory();
            _userService = servicesFactory.GetUserService();
        }