extra pdf is downloading while exporting pdf in c# .net

Question

while im exporting, one pdf is downloading in desired location but another extra pdf is downloading in downloads folder

How to stop downloading extra one pdf?

            Response.ContentType = "application/pdf";
            Response.AddHeader("content-disposition", "attachment;filename=" + Projname + ".pdf");
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            System.IO.StringWriter stringWrite = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
            design.RenderControl(htmlWrite);
            string myText = stringWrite.ToString().Replace("&", "&");
            StringReader sr = new StringReader(myText.ToString());
            Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 100f, 0f);
            string strPath = "D:\\WeeklyReport of " + Projname + ".pdf";
            PdfWriter writer = PdfWriter.GetInstance(pdfDoc, new FileStream(strPath, FileMode.Create));
            pdfDoc.Open();
            XMLWorkerHelper.GetInstance().ParseXHtml(writer, pdfDoc, sr);
            pdfDoc.Close();
            pdfDoc.Dispose();

Answer 1

This line

PdfWriter writer = PdfWriter.GetInstance(pdfDoc, new FileStream(strPath, FileMode.Create));

of your code calls for a PdfWriter writing to a file on the server file system.

If you don't want that, you have to replace the new FileStream(strPath, FileMode.Create) by something else, e.g. the HTTP response output stream:

PdfWriter writer = PdfWriter.GetInstance(pdfDoc, Response.OutputStream);

This has potential disadvantages,

• the HTTP response does not have a header containing the size of its payload. Some browser versions are known to have issues in such a case; and
• in case of an error during PDF creation, the client retrieves half a PDF and not a proper error message.

If these drawbacks worry you, you may probably instead want to instantiate a MemoryStream, target the PdfWriter to it, build the PDF, retrieve the byte[] from the stream, create a content length header for the size of that array, and finally write the array to Response.OutputStream.