Model

    public class RegisterModel
    {
        [Required]
        public string SelectedHmc { get; set; }

        public SelectList HmcList { get; set; }

        [Required]
        public string SelectedCity { get; set; }

        public SelectList CityList { get; set; }

        [Required]
        public string SelectedStreet { get; set; }

        public SelectList StreetList { get; set; }

        [Required]
        public string SelectedHouse { get; set; }

        public SelectList HouseList { get; set; }

        [Required]
        public string AppartmentNumber { get; set; }

        [Required]
        [DataType(DataType.EmailAddress)]
        public string Email { get; set; }

        [Required]
        [StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
        [DataType(DataType.Password)]
        public string Password { get; set; }

        [Required]
        [DataType(DataType.Password)]
        [System.Web.Mvc.Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
        public string ConfirmPassword { get; set; }

        [DataType(DataType.PhoneNumber)]
        public string PhoneNumber { get; set; }

    }