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

        private void AdjustTabOrder(PdfArray annots, PdfIndirectReference ind, PdfNumber nn)
        {
            int v = nn.IntValue;
            List<int> t;
            if (!tabOrder.TryGetValue(annots, out t)) {
                t = new List<int>();
                int size = annots.Size - 1;
                for (int k = 0; k < size; ++k) {
                    t.Add(zero);
                }
                t.Add(v);
                tabOrder[annots] =  t;
                annots.Add(ind);
            }
            else {
                int size = t.Count - 1;
                for (int k = size; k >= 0; --k) {
                    if (t[k] <= v) {
                        t.Insert(k + 1, v);
                        annots.Add(k + 1, ind);
                        size = -2;
                        break;
                    }
                }
                if (size != -2) {
                    t.Insert(0, v);
                    annots.Add(0, ind);
                }
            }
        }