using iTextSharp.text;
using iTextSharp.text.pdf;
Document doc = new Document(PageSize.A4);
PdfWriter.GetInstance(doc, new FileStream("output.pdf", FileMode.Create));
doc.Open();
// 添加分页符
doc.NewPage();
doc.Add(new Paragraph("第一页内容"));
doc.NewPage();
doc.Add(new Paragraph("第二页内容"));
doc.Close();