public User(string firstname, string lastname, string cin, DateTime selectedDate, string password, bool superUser,
             string phoneNumber, string role, string city)
 {
     this.Fisrtname   = firstname;
     this.Lastname    = lastname;
     this.CIN         = cin;
     this.DateOfBirth = selectedDate;
     this.Password    = password;
     this.IsSuperUser = superUser;
     this.PhoneNumber = phoneNumber;
     this.Role        = role;
     this.City        = CityDAO.GetCityByName(city);
 }