I would like to know how can I edit an existing PDF document in C#. The document is already created and has fields as the one on the image below:
I want to know if there is a code which can check the desired checkbox or enter text at the lines. Please let me know.
I looked at iTextSharp but I don't know if that tool can help me achieve that.
There are ways to do it, but it requires external tools. I use ActivePDF library, it provides form filling routines and works quite well..
You can do that with iTextSharp, BUT first you should find out more about the document.
If the pdf contains an actual acroform form definition, filling it is fairly easy. There are many examples in the documentation and on the iText Web site.
If it does not contain such a form definition, though, and the check boxes and text fields merely are some lines drawn somewhere, it gets a bit more difficult: you have to measure where to put your entries.
Additionally you should find out whether the document is signed or encrypted which might limit what you are allowed to do with the document.
Related
Background
I am working on a WPF windows application and I want add embedded PDF viewer with only basic functionalities including PDF view, text search and page navigation.
I tried embedded Internet Explorer and Adobe PDF Reader installed method (this way ) but this method is not suitable for our requirement as Adobe PDF Reader has too may external links which can not be allowed because of the security reasons of the application.
Therefore, I am trying to use moonpdf library. This library works fine with our requirements but the only problem is there is no text search functionality in this library. (I think it shows PDF as images)
Then, I have download moonpdf source code and realized that moonpdf is using libmupdf.dll wrapping to c#.
I can modify the moonpdf source code and mupdf source code for our requirement if needed.
My Question
Is there any text search functionalities in mupdf? if so how can I use it?
In the basic mupdf library, there are several functions for searching for text. These work by searching a page for a text string, in a few different variants, and returns the area for all hits of the given text. You need to iterate over the pages yourself (in order to do forward or reverse search).
fz_quad hits[1000];
count = fz_search_page(ctx, page, needle, hits, nelem(hits));
That said, I do not know how or even if "moonpdf" has wrapped these functions.
You can certainly extract the text from a document, the MuPDF library will do that. I believe it's up to you to apply your own search criteria after that. I'm afraid I'm not expert enough to answer the 'how to' part of it though. I imagine one of the mutool examples would be helpful here though. I'll see if I can get one of the developers to answer.
This question might have been answered already and I looked into the web, but I don't really know what term to use, but here it is.
As some of you know, some people provide writable pdf file, basically look like some web form, but in pdf format, in which there are fields that can be filled. One of our client have such a form and would like to be able to fill in the fields from a software that we wrote. Most of the fields are there and we can easily add the one missing, but we have two main problems with this
I can't find a way to actually write to those documents.
The document is provided by a government entity, which seems to update it with new change several times a year. Plus they only accept the most recent version.
My question is : Is this even possible and if so how do we do that ? When I look in the web, I find all ressource on how to write a PDF in c# or other language, but how to write in to those PDF form.
Thanks,
I have a PDF and want to extract the text contained in it. I've tried a few different PDF libraries and they all return basically the same results. When extracting the text from a two page document with literally hundreds of words, only a dozen or so words from the header are returned.
Is there any way to tell if the text I'm after is actually text or a raster image of the text? I'm thinking something along the lines of Firebug's "Inspect Element" but at this point I'll take any solution that tells what I'm really looking at.
This project really doesn't justify attempting to use OCR. And, although a simple solution, using fields in the PDF is not an option since the generator of the file is a third party.
If Acrobat/Reader can select the text, then it Is Text.
Reasons your library might not be able to find the text in question:
Complex/bad fonts or encodings. Adobe can be very forgiving of garbage in, somehow managing to get Good Info out.
The text could be in an annotation rather than the page contents. It won't matter what program parses the content stream if you need to look in the annot array instead.
You didn't name a particular library, so it's possible that the library you're using doesn't look inside XObject Forms. That's unlikely in an even remotely mature API, but stranger things have happened.
If you can get away with copy/pasta from Reader, then just go that route.
Have you tried Amyuni PDF Creator .Net? It allows you to enumerate all components from a specified rectangular region of a page and inspect their type from a predefined types list. You could run a quick test using the trial version and the following code sample for text extraction:
// open a PDF file
axPDFCreactiveX1.Open(System.IO.Directory.GetCurrentDirectory()+"\\sampleBookmarks.pdf", "");
axPDFCreactiveX1.Refresh ();
String text = axPDFCreactiveX1.GetRawPageText (1);
MessageBox.Show (text);
Additionally, it provides Tesseract OCR integration in case you needed it.
Disclaimer: I am part of the development team of this product.
Check this site out. It may contain some helpful code snippets. http://www.codeproject.com/KB/cs/PDFToText.aspx
In my work we need to generate contract documents that dynamically extract information from the database to personalize client related information.
These documents not only have text, but also they need tables with dynamic rows (ie.: shows some products owned by the client). These tables can be placed in different parts of the document and they can be between paragraphs.
The important thing is that: the texts must be justified (a legal requeriment of my country)
We do these documents with Reporting Services and export them to PDF, but this tool doesn't provide justified text.
i did some googleing and found that there is no way to justify text in Reporting Services.
Is there another way to do this? if not, can you give me some alternative to solve this issue?
We work with ASP.NET in C#.
Thanks in advance
You might be able to export them to Word, where I believe you would have greater control over the justification, then convert the Word document to a PDF.
I have an existing XPS file that I would like to use as a template and possibly bind data to it. I have tried several methods, but cannot seem to get it to work.
Does anyone have any experience altering an existing XPS file to add data at runtime and then print or save?
Any help is appreciated.
XPS documents conform to the Open XML standard. There is an SDK for working with these docs. Here is a How-to article by Beth Massi: "Accessing Open XML Document Parts with the Open XML SDK".
Since you are working with the internal doc structure you might also check out 'Open XML Package Editor" which lets you explore the doc with Visual Studio. Here is another How-to by Beth Massi: "Handy Visual Studio Add-In to View Office 2007 Files".
+tom
it's a bit of a challenge to do this with XPS, but it is possible.
You can do this with our NiXPS SDK.
I've posted an example on my blog a while ago:
XPS variable data example
Regards,
Nick
Bindings are evaluated during the process of writing to an XPS document. So you can't set up a {Binding} in a FixedDocument, Write that FD to an XpsDocument, and expect to get that original FD back again when you next open that saved doc.
Also, the standard XpsWriter does convert everything into Glyphs on canvases, so you can't, say, a textbox in the original and expect to be able to find it after its been saved to a document.
I've never used the NiXPS libraries, so if Nick says it can be done you might want to check it out.
One last possibility--You can create placeholders in a form that you will be able to find later. They'd have to be text (something like [[{{FORMFIELDHERELOL}}]]) with some kind of delimiter scheme to differentiate the text from everything else. You could then go spelunking in the XML looking for text that fits the delimeter pattern and switch out those glyphs for your binding text. Of course, the issue with THAT is that if you aren't putting X chars in place of X chars you might find you have to do some repositioning. As its all glyphs on canvas this might be slightly harder than, say, threading a needle with a shoelace.