.MainTableDataSource(dataSource =>
                                  {
                                      var crossTabList = Evaluations_Result.Pivot(x => new
                                      {
                                          گروه_سوال = x.QuestionGroupName,
                                          سوال = x.QuestionName,
                                          وزن = x.QuestionWeight.Value
                                      },
                                          x1 => x1.IndexName,
                                          x2 => x2.Count(x => x.IndexName != null));
                                      dataSource.Crosstab(crossTabList);                                    
                                  })
                                  .MainTableAdHocColumnsConventions(adHocColumnsConventions =>
                                  {
                                      adHocColumnsConventions.ShowRowNumberColumn(true);
                                      adHocColumnsConventions.RowNumberColumnCaption("ردیف");
                                  })
                                  .MainTableSummarySettings(summarySettings =>
                                  {
                                      summarySettings.OverallSummarySettings("جمع کل");
                                      summarySettings.PageSummarySettings("جمع صفحه");
                                  })
                                  .MainTableEvents(events =>
                                  {
                                      events.DataSourceIsEmpty(message: "اطلاعاتی برای نمایش وجود ندارد.");
}