System.Data.DataTableReader.GetString C# (CSharp) Метод

        public override string GetString(int ordinal)
        {
            ValidateState(nameof(GetString));
            ValidateReader();
            try
            {
                return (string)_currentDataRow[ordinal];
            }
            catch (IndexOutOfRangeException e)
            {
                // thrown by DataColumnCollection
                ExceptionBuilder.TraceExceptionWithoutRethrow(e);
                throw ExceptionBuilder.ArgumentOutOfRange(nameof(ordinal));
            }
        }

        public void Fact()
        {
            var connection = default (DbConnection);
            var reader = default(DbDataReader);

            try
            {
                connection = KandaXunitProviderFactory.Instance.CreateConnection();
                connection.Open();

                var schema = connection.GetTablesSchema();
                reader = new DataTableReader(schema);

                while (reader.Read())
                {
                    var name = reader.GetString(reader.GetOrdinal(@"TABLE_NAME"));
                    var type = reader.GetString(reader.GetOrdinal(@"TABLE_TYPE"));

                    //this.transformEntity(name, type);
                    this.transformInsertTable(name, type);
                }
            }
            finally
            {
                if (reader != null) { reader.Close(); }
                if (connection != null) { connection.Close(); }
            }
        }