Determine number of pages in a PDF file [closed]

Answer 1

I have used pdflib for this.

    p = new pdflib();

    /* Open the input PDF */
    indoc = p.open_pdi_document("myTestFile.pdf", "");
    pageCount = (int) p.pcos_get_number(indoc, "length:pages");

Answer 2

Docotic.Pdf library may be used to accomplish the task.

Here is sample code:

PdfDocument document = new PdfDocument();
document.Open("file.pdf");
int pageCount = document.PageCount;

The library will parse as little as possible so performance should be ok.

Disclaimer: I work for Bit Miracle.

Answer 3

This should do the trick:

public int getNumberOfPdfPages(string fileName)
{
    using (StreamReader sr = new StreamReader(File.OpenRead(fileName)))
    {
        Regex regex = new Regex(@"/Type\s*/Page[^s]");
        MatchCollection matches = regex.Matches(sr.ReadToEnd());

        return matches.Count;
    }
}

From Rachael's answer and this one too.

Answer 4

I've used the code above that solves the problem using regex and it works, but it's quite slow. It reads the entire file to determine the number of pages.

I used it in a web app and pages would sometimes list 20 or 30 PDFs at a time and in that circumstance the load time for the page went from a couple seconds to almost a minute due to the page counting method.

I don't know if the 3rd party libraries are much better, I would hope that they are and I've used pdflib in other scenarios with success.

Answer 5

found a way at http://www.dotnetspider.com/resources/21866-Count-pages-PDF-file.aspx this does not require purchase of a pdf library

Answer 6

I have good success using CeTe Dynamic PDF products. They're not free, but are well documented. They did the job for me.

http://www.dynamicpdf.com/