How to get the header and footer of a page

问题

How do I get code in the header and footer of a PDF file using C # 2012 (asp.net) + iTextSharp (v5.4.5.0)?

At the moment I can extratir the pages but I need to separate the headers and footers of your content.

Below is my code to get the page:

PdfReader pdfreader = new PdfReader(nmfile);
ITextExtractionStrategy strategy = new SimpleTextExtractionStrategy();           

for (int page = 1; page <= pdfreader.NumberOfPages; page++)
{
    extractText = PdfTextExtractor.GetTextFromPage(pdfreader, page, strategy);
        extractText = Encoding.UTF8.GetString(ASCIIEncoding.Convert(Encoding.Default, Encoding.UTF8, Encoding.Default.GetBytes(extractText)));

    //...
}

Thanks to all

来源：https://stackoverflow.com/questions/22022559/how-to-get-the-header-and-footer-of-a-page