public MobilePhone(int id)
 {
     mySQL           = MySQL.getInstance();
     mySQL.TableName = tableName;
     this.id         = id;
     string[] result = mySQL.select("id = " + id)[0];
     _producer   = new Producer(int.Parse(result[1]));
     _phoneType  = new PhoneType(int.Parse(result[2]));
     _os         = new OS(int.Parse(result[3]));
     _modelPhone = new ModelPhone(int.Parse(result[4]));
     _photoUrl   = result[5];
     _price      = double.Parse(result[6]);
 }
        public static void Add(
            Producer producer,
            PhoneType phoneType,
            OS os,
            ModelPhone modelPhone,
            string photoUrl,
            double price)
        {
            MySQL mySQL = MySQL.getInstance();

            mySQL.TableName = tableName;
            mySQL.insert("`id_producer`, `id_phone_type`, `id_os`, `id_model_phone`, `photo_url`, `price`",
                         string.Format("'{0}', '{1}', '{2}', '{3}', '{4}', '{5}'",
                                       producer.id, phoneType.id, os.id, modelPhone.Id, photoUrl, price));
        }