itextsharp

I'm developing a web application that displays PDFs and allows users to order copies of the documents. We want to add text, such as "unpaid" or "sample", on the fly when the PDF is displayed. I have accomplished this using itextsharp. However, the page images are easily separated from the watermark text and extracted using a variety of freeware programs. How can I add the watermark to the pages in the PDF, but flatten the page images and watermark together so that the watermark becomes part of the pdf page image, thereby preventing the watermark from being removed (unless the person wants to

In one cell and on the same line, I must add two text (name and date). The first snippet of text must be on the left page side, the second one on the right, and everything must be in one line. I've tried used Paragraph s, Chunk s and Phrase s but I don't know how to do it. If you want to separate two pieces of text in the same Phrase or Paragraph , you have to create a Chunk I often refer to as glue : Chunk glue = new Chunk(new VerticalPositionMark()); You can use this glue like this: public void createPdf(String dest) throws IOException, DocumentException { Document document = new Document();

I would like to use data from a form and add to my pdf template. I use the following for textfields... PdfStamper formFiller = new PdfStamper(reader, ms); AcroFields formFields = formFiller.AcroFields; formFields.SetField("Name", formData.Name); How do I check a checkbox? I think this should do the trick: formFields.SetField("checkBoxId", "Yes"); 来源： https://stackoverflow.com/questions/6253211/how-do-i-check-a-check-box-in-a-pdf-template