public void ModifyUser(int id, string email, string name, string phone, string address, string zipcode, string age)
{
User user = userDb.GetUser(id);
user.Email = email;
user.Name = name;
user.Phone = phone;
user.Address = address;
user.Zipcode = zipcode;
user.Age = age;
userDb.ModifyUser(user);
}