public static void Gen(string dest)
{
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
Document doc = new Document(pdfDoc, new PageSize(60, 140));
doc.SetMargins(5, 5, 5, 5);
PdfFont bold = PdfFontFactory.CreateFont(StandardFonts.HELVETICA_BOLD);
PdfFont regular = PdfFontFactory.CreateFont(StandardFonts.HELVETICA);
PdfFont mrv39s = PdfFontFactory.CreateFont(@"fonts/mrvcode39s.ttf", true);
Paragraph p1 = new Paragraph();
p1.Add(new Text("23").SetFont(bold).SetFontSize(12));
p1.Add(new Text("000").SetFont(bold).SetFontSize(6));
doc.Add(p1);
Paragraph p2 = new Paragraph("T.T.C.").SetFont(regular).SetFontSize(6);
p2.SetTextAlignment(TextAlignment.RIGHT);
doc.Add(p2);
// CODE 39
Paragraph pc3 = new Paragraph("*10000100*").SetFont(mrv39s).SetFontSize(6);
pc3.SetTextAlignment(TextAlignment.LEFT);
pc3.SetRotationAngle(Math.PI / 2);
doc.Add(pc3);
Barcode39 barcode = new Barcode39(pdfDoc);
barcode.SetCode("12345678");
Rectangle rect = barcode.GetBarcodeSize();
PdfFormXObject template = new PdfFormXObject(new Rectangle(rect.GetWidth(), rect.GetHeight() + 10));
PdfCanvas templateCanvas = new PdfCanvas(template, pdfDoc);
new Canvas(templateCanvas, pdfDoc, new Rectangle(rect.GetWidth(), rect.GetHeight() + 10))
.ShowTextAligned(new Paragraph("DARK GRAY").SetFont(regular).SetFontSize(6), 0, rect.GetHeight() + 2, TextAlignment.LEFT);
barcode.PlaceBarcode(templateCanvas, DeviceRgb.BLACK, DeviceRgb.BLACK);
Image image = new Image(template);
image.SetRotationAngle(Math.PI / 4);
image.SetAutoScale(true);
doc.Add(image);
Paragraph p3 = new Paragraph("SMALL").SetFont(regular).SetFontSize(6);
p3.SetTextAlignment(TextAlignment.CENTER);
doc.Add(p3);
doc.Close();
}