itextsharp

问题 I'm trying to add a horizontal line on top to divide the header text from the actual values in my pdf file: Here's my code: public class StudentList { public void PrintStudentList(int gradeParaleloID) { StudentRepository repo = new StudentRepository(); var students = repo.FindAllStudents() .Where(s => s.IDGradeParalelo == gradeParaleloID); try { Document document = new Document(PageSize.LETTER); PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(Environment.GetFolderPath

问题 I'm working on a project in which I have to create a PDF file using itextsharp . However, I get the following error: System.IO.IOException: Compression JPEG is only supported with a single strip. This image has 229 strips. at iTextSharp.text.pdf.codec.TiffImage.GetTiffImageColor(TIFFDirectory dir, RandomAccessFileOrArray s) at iTextSharp.text.pdf.codec.TiffImage.GetTiffImage(RandomAccessFileOrArray s, Int32 page, Boolean direct) at iTextSharp.text.Image.GetInstance(Uri url) at iTextSharp.text

问题 I'm working on a project in which I have to create a PDF file using itextsharp . However, I get the following error: System.IO.IOException: Compression JPEG is only supported with a single strip. This image has 229 strips. at iTextSharp.text.pdf.codec.TiffImage.GetTiffImageColor(TIFFDirectory dir, RandomAccessFileOrArray s) at iTextSharp.text.pdf.codec.TiffImage.GetTiffImage(RandomAccessFileOrArray s, Int32 page, Boolean direct) at iTextSharp.text.Image.GetInstance(Uri url) at iTextSharp.text

问题 I've tried my damnedest to get this to work, but all info on the web regarding iTextSharp seems to be out dated. (I'm using version 5.5.3) I have a simple string variable containing the HTML that I want rendered to a PDF. There are a few examples using XMLWorker / XMLWorkerHelper, but these classes no longer seem to be part of iTextSharp. HTMLWorker is still available, but the moans about being obsolete. (And also doesn't work) This is what I have so far: public byte[] RenderPdf() {

问题 I am generating and storing PDFs in a database. The pdf data is stored in a text field using Convert.ToBase64String(pdf.ByteArray) If I generate the same exact PDF that already exists in the database, and compare the 2 base64strings, they are not the same. A big portion is the same, but it appears about 5-10% of the text is different each time. What would make 2 pdfs different if both were generated using the same method? This is a problem because I can't tell if the PDF was modified since it

问题 I have to insert a an image in a pdf. That is, wherever I see a text 'Signature', I have to insert an signature image there . I can do by saying absolute positions . But, I am looking for how to find the position of the word 'Signature' in the pdf and insert the image. Appreciate ur help! This is the working code: using (Stream inputImageStream = new FileStream(@"C:\signature.jpeg", FileMode.Open, FileAccess.Read, FileShare.Read)) using (Stream outputPdfStream = new FileStream(@"C:\test

问题 I want to make my PDF document protected by not allowing fill in and copy from it. I am using iTextSharp for this. I have following code: PdfReader reader = new PdfReader(document, System.Text.Encoding.UTF8.GetBytes(PASSWORD)); using (MemoryStream ms = new MemoryStream()) { using (PdfStamper stamper = new PdfStamper(reader, ms)) { stamper.SetEncryption( null, Encoding.ASCII.GetBytes(PASSWORD), PdfWriter.ALLOW_PRINTING, PdfWriter.ENCRYPTION_AES_128); } } reader.Close(); When the document is

问题 I was under the impression that it is now possible to copy AcroFields using PdfCopy. In the release notes for iText 5.4.4.0 this is listed as possible now. However, when I try to do so it appears all the annotations (I think I am using that term correctly, still fairly new to iText...) for the fields are stripped out. It looks like the fields are there (meaning I can see the blue boxes that indicate an editable field), but they are not editable. If I try to bring the PDF up in Acrobat I get a

问题 Using itextsharp I am trying to tile a single (large) page pdf document (called import document) into a new document where this page is split into several DIN A4 pages (called output document). But I want to draw a border around the DIN A4 pages of the output and only add a smaller than A4 size part of the import document. For clarification please see the picture: On the left is the import doc in size A3 which is like two A4 pages side-by-side (black dotted line). This shall be split to A4

问题 I'd like to add a Paragraph of text to pages in 2 columns. I understand that MultiColumnText has been eliminated. I know I can create column 1, write to it, and if there is more text create column 2 and write to it. If there is still more text, go to the next page and repeat. However I always end up with either: a long chunk of text orphaned in the left column. a full left column and partially used right column. How can I format my content in 2 columns while reducing white space, such as