How to extract pages from a PDF document using c# and itextsharp

private static void ExtractPages(string inputFile, string outputFile,

    int start, int end)

{

    // get input document

    PdfReader inputPdf = new PdfReader(inputFile);

    // retrieve the total number of pages

    int pageCount = inputPdf.NumberOfPages;

    if (end < start || end > pageCount)

    {

        end = pageCount;

    }

    // load the input document

    Document inputDoc =

        new Document(inputPdf.GetPageSizeWithRotation(1));

    // create the filestream

    using (FileStream fs = new FileStream(outputFile, FileMode.Create))

    {

        // create the output writer

        PdfWriter outputWriter = PdfWriter.GetInstance(inputDoc, fs);

        inputDoc.Open();

        PdfContentByte cb1 = outputWriter.DirectContent;

        // copy pages from input to output document

        for (int i = start; i <= end; i++)

        {

            inputDoc.SetPageSize(inputPdf.GetPageSizeWithRotation(i));

            inputDoc.NewPage();

            PdfImportedPage page =

                outputWriter.GetImportedPage(inputPdf, i);

            int rotation = inputPdf.GetPageRotation(i);

            if (rotation == 90 || rotation == 270)

            {

                cb1.AddTemplate(page, 0, -1f, 1f, 0, 0,

                    inputPdf.GetPageSizeWithRotation(i).Height);

            }

            else

            {

                cb1.AddTemplate(page, 1f, 0, 0, 1f, 0, 0);

            }

        }

        inputDoc.Close();

    }

}

 Ref:

http://www.jamesewelch.com/2008/11/14/how-to-extract-pages-from-a-pdf-document/

An Error Occurred Setting Your User Cookie using Webclient

public class CookieAwareWebClient : WebClient

   
{
        private CookieContainer m_container = new CookieContainer();

        protected override WebRequest GetWebRequest(Uri address)
        {
            WebRequest request = base.GetWebRequest(address);
            if (request is HttpWebRequest)
            {
                (request as HttpWebRequest).CookieContainer = m_container;
            }
            return request;
        }
    }

CookieAwareWebClient client = new CookieAwareWebClient();

 string  page  =client.DownloadString(hdnSelectedLink.Value);