FreeMoney.BitcoinAddress.Insert C# (CSharp) Метод

        private bool Insert()
        {
            string query = "";

            query += "INSERT INTO opensim_btc_addresses (";
            query += "btc_address, ";
            query += "user_identifier";
            query += ") values(";
            query += "?btc_address, ";
            query += "?user_identifier";
            query += ");";

            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
            {

                dbcon.Open();

                MySqlCommand cmd = new MySqlCommand( query, dbcon);

                try
                {
                    using (cmd)
                    {
                        cmd.Parameters.AddWithValue("?btc_address", m_btc_address);
                        cmd.Parameters.AddWithValue("?user_identifier", m_user_identifier);
                        cmd.ExecuteNonQuery();
                        cmd.Dispose();

                        return true;

                    }
                }
                catch (Exception)
                {
                    //m_log.ErrorFormat("[ASSET DB]: MySQL failure creating asset {0} with name \"{1}\". Error: {2}",
                }

            }

            return false;
        }