public List<object[]> ReadData(string query_)
        {
            List<object[]> rows = null;

                using (DbConnection dbConn = Connect())
                {
                    if (dbConn == null)
                        return null;

                    using (DbCommand sqlRequest = BuildCommand(query_, dbConn))
                    {
                        sqlRequest.CommandType = CommandType.Text;

                        using (DbDataReader sqlDataReader = sqlRequest.ExecuteReader())
                        {
                            rows = new List<object[]>();
                            while (sqlDataReader.Read())
                            {
                                object[] columns_ = new object[sqlDataReader.FieldCount];
                                sqlDataReader.GetValues(columns_);
                                rows.Add(columns_);
                            }
                        }
                    }
                }

            return rows;
        }