PdfRpt.Core.PdfTable.MainTableCellsEvent.thisPageSummary C# (CSharp) Method

        private object thisPageSummary()
        {
            var pageBoundary = CurrentRowInfoData.PagesBoundaries.OrderByDescending(x => x).Take(2).ToList();
            if (!pageBoundary.Any()) return string.Empty;

            int firstRowOfThePage, lastRowOfThePage;
            if (pageBoundary.Count == 1)
            {
                firstRowOfThePage = 1;
                lastRowOfThePage = pageBoundary[0];
            }
            else
            {
                firstRowOfThePage = pageBoundary[1] + 1;
                lastRowOfThePage = pageBoundary[0];
            }

            var propertyName = _pdfRptCell.SharedData.PdfColumnAttributes.PropertyName;
            var list = SummaryCellsData.Where(x => x.CellData.PropertyName == propertyName
                                           && x.OverallRowNumber >= firstRowOfThePage && x.OverallRowNumber <= lastRowOfThePage)
                                       .ToList();
            return _pdfRptCell.SharedData.PdfColumnAttributes.AggregateFunction.ProcessingBoundary(list);
        }