How can I add an image to all pages of my PDF? -


i have been trying add image pages using itextsharp. image needs on content of every page. have used following code below otherdoc.add()

document doc = new document(itextsharp.text.pagesize.a4, 10, 10, 30, 1); pdfwriter writer = pdfwriter.getinstance(doc, new filestream(server.mappath("~/pdf/" + fname), filemode.create)); doc.open(); image image = image.getinstance(server.mappath("~/images/draft.png")); image.setabsoluteposition(12, 300); writer.directcontent.addimage(image, false); doc.close(); 

the above code inserts image in last page. there way insert image in same way in pages?

it's normal image added once; after all: you're adding once. (or you've left away essential steps in code snippet: see edit made.)

in case: can solve problem using page event. there examples in java here: http://itextpdf.com/sandbox/events

or can consult chapter 5 of book. examples available in java in c#.

you should create document in 5 steps , add event in step 2:

// step 1 document document = new document(); // step 2 pdfwriter writer = pdfwriter.getinstance(document, stream); myevent event = new myevent(); writer.pageevent = event; // step 3 document.open(); // step 4 // add whatever content want add // step 5 document.close(); 

you have write myevent class yourself:

protected class myevent : pdfpageeventhelper {      image image;      public override void onopendocument(pdfwriter writer, document document) {         image = image.getinstance(server.mappath("~/images/draft.png"));         image.setabsoluteposition(12, 300);     }      public override void onendpage(pdfwriter writer, document document) {         writer.directcontent.addimage(image);     } } 

the onendpage() in class myevent triggered every time pdfwriter has finished page. hence image added on every page.

caveat: important create image object outside onendpage() method, otherwise image bytes risk being added many times there pages in pdf (leading bloated pdf).


Comments

Popular posts from this blog

PHP while loop dynamic rowspan -

go - Golang: panic: runtime error: invalid memory address or nil pointer dereference using bufio.Scanner -

Spring Boot + JPA + Hibernate: Unable to locate persister -