public Customer(string name, string phoneNumber, string address, SEX sex, string username, string password, CUSTOMER_STATUS status = CUSTOMER_STATUS.ACTIVE)
 {
     Name        = name;
     PhoneNumber = phoneNumber;
     Address     = address;
     Sex         = sex;
     Status      = status;
     Username    = username;
     Password    = password;
 }
        public static string Convert(CUSTOMER_STATUS status)
        {
            switch (status)
            {
            case CUSTOMER_STATUS.ACTIVE: return("Activated");

            case CUSTOMER_STATUS.DISABLED: return("Blocked");

            default: return("");
            }
        }
 private void UpdateStatus(Customer customer, CUSTOMER_STATUS status)
 {
     customer.Status = status;
     this.Update(customer);
 }