iTextSharp.text.pdf.PdfCopyFieldsImp.UpdateCalculationOrder C# (CSharp) Метод

        protected internal void UpdateCalculationOrder(PdfReader reader)
        {
            PdfDictionary catalog = reader.Catalog;
            PdfDictionary acro = catalog.GetAsDict(PdfName.ACROFORM);
            if (acro == null)
                return;
            PdfArray co = acro.GetAsArray(PdfName.CO);
            if (co == null || co.Size == 0)
                return;
            AcroFields af = reader.AcroFields;
            for (int k = 0; k < co.Size; ++k) {
                PdfObject obj = co[k];
                if (obj == null || !obj.IsIndirect())
                    continue;
                String name = GetCOName(reader, (PRIndirectReference)obj) ;
                if (af.GetFieldItem(name) == null)
                    continue;
                name = "." + name;
                if (calculationOrder.Contains(name))
                    continue;
                calculationOrder.Add(name);
            }
        }