public PlayerLastSellStoneRecord GetPlayerLastSellStoneRecord(int userID)
        {
            MySqlConnection myconn = null;
            MySqlCommand    mycmd  = null;

            try
            {
                myconn = MyDBHelper.Instance.CreateConnection();
                string sqlText = "select * from playerlastsellstonerecord where `UserID` = @UserID;";
                mycmd             = myconn.CreateCommand();
                mycmd.CommandText = sqlText;
                mycmd.Parameters.AddWithValue("@UserID", userID);
                myconn.Open();
                MySqlDataAdapter adapter = new MySqlDataAdapter(mycmd);
                DataTable        table   = new DataTable();
                adapter.Fill(table);
                var records = MetaDBAdapter <PlayerLastSellStoneRecord> .GetPlayerLastSellStoneRecord(table);

                table.Clear();
                table.Dispose();
                adapter.Dispose();

                if (records.Length == 0)
                {
                    return(null);
                }

                return(records[0]);
            }
            finally
            {
                if (mycmd != null)
                {
                    mycmd.Dispose();
                }
                MyDBHelper.Instance.DisposeConnection(myconn);
            }
        }