Password protected PDF using iTextSharp

        private void ProtectPDF()

        {

            string InputFile = @"~\NewFolder1\Worksheet.pdf";

            string OutputFile = @"~\NewFolder1\Confidential.pdf";

            using (Stream input = new FileStream(InputFile, FileMode.Open

, FileAccess.Read

, FileShare.Read))

            {

                using (FileStream output = new FileStream(OutputFile

 , FileMode.Create

 , FileAccess.Write

, FileShare.None))

                {

                    PdfReader reader = new PdfReader(input);

                    PdfEncryptor.Encrypt(reader, output, true

, "Your Password"

, "owner password"

, PdfWriter.ALLOW_SCREENREADERS);

                }

            }

        }

Read content of pdf using iTextSharp

How to read content from pdf file ?

Here is little code to do this stuff.

using iTextSharp.text.pdf.parser;

using System.Text;

namespace TestApplication

{

    public partial class WebForm1 : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            string Path = @"C:\Users\Ajay\Downloads\Anish jesani.pdf";

            iTextSharp.text.pdf.PdfReader pr = new iTextSharp.text.pdf.PdfReader(Path);

            ITextExtractionStrategy pes = new SimpleTextExtractionStrategy();

            int pageCnt = pr.NumberOfPages; // get number of Pages

            string str = PdfTextExtractor.GetTextFromPage(pr, 1);    // 1 = Page number

            str = Encoding.UTF8.GetString(ASCIIEncoding.Convert(Encoding.Default,

 Encoding.UTF8, Encoding.Default.GetBytes(str)));

        }

    }

}

This is done using iTextSharp.dll