5

I am currently assembling and displaying a PDF using RazorPDF in MVC4 and would like to save the PDF file to the file system at the same time I return the view.

The following line of code in the controller action is calling the view:

return new PdfResult(claims, "PDF");
Jaimin
  • 7,964
  • 2
  • 25
  • 32
Dan Aschmann
  • 91
  • 1
  • 5
  • I am still having the same issue. No solution yet. – Dan Aschmann Aug 13 '13 at 15:27
  • Have you seen this post http://stackoverflow.com/questions/5826649/returning-a-file-to-view-download-in-mvc ? It should be possible to add that `Content-Disposition` header before calling `PdfResult()` -- whether it works or not remains to be seen. – David Tansey Aug 16 '13 at 06:11
  • Considering that the pdf is only created in the view after calling `return new PDFResult` how would you use ContentDisposition in the same controller ActionResult as the call to create the pdf view? – Dan Aschmann Aug 16 '13 at 17:19

2 Answers2

4

I was able to finally write the pdf to the directory system by changing the code base of the RazorPDF render method. The Rendor method creates a PdfWriter object that is associated to the response stream:

        // Associate output with response stream
        var pdfWriter = PdfWriter.GetInstance(document, viewContext.HttpContext.Response.OutputStream);
        pdfWriter.CloseStream = false;

The solution was to create another PdfWriter object that was associated to a FileStream object as illustrated below:

        // Create the pdf file in the directory system
        var fileStream = new FileStream(myPdfFilePath, FileMode.Create);
        var pdfWriter2 = PdfWriter.GetInstance(document, fileStream);

I then closed the objects:

        fileStream.Close();

        pdfWriter.Close();
        pdfWriter2.Close();

I had to essentially incorporate the PdfResult and PdfView classes of RazorPDF into my own project and significantly alter the code. The reason is because I also had to encorporate calls to an email class that sent the pdf to a user.

The full Render method is displayed below:

    public void Render(ViewContext viewContext, TextWriter writer)
    {
        // generate view into string
        var sb = new System.Text.StringBuilder();
        TextWriter tw = new System.IO.StringWriter(sb);
        myResult.View.Render(viewContext, tw);
        var resultCache = sb.ToString();

        // detect itext (or html) format of response
        XmlParser parser;
        using (var reader = GetXmlReader(resultCache))
        {
            while (reader.Read() && reader.NodeType != XmlNodeType.Element)
            {
                // no-op
            }

            if (reader.NodeType == XmlNodeType.Element && reader.Name == "itext")
                parser = new XmlParser();
            else
                parser = new HtmlParser();
        }

        // Create a document processing context
        var document = new Document();
        document.Open();

        // Associate output with response stream
        var pdfWriter = PdfWriter.GetInstance(document, viewContext.HttpContext.Response.OutputStream);
        pdfWriter.CloseStream = false;

        // Create the pdf file in the directory system
        var fileStream = new FileStream(myPdfFilePath, FileMode.Create);
        var pdfWriter2 = PdfWriter.GetInstance(document, fileStream);

        // this is as close as we can get to being "success" before writing output
        // so set the content type now
        viewContext.HttpContext.Response.ContentType = "application/pdf";

        // parse memory through document into output
        using (var reader = GetXmlReader(resultCache))
        {
            parser.Go(document, reader);
        }

        fileStream.Close();

        // Send an email to the claimant
        Thread.Sleep(100);
        if (File.Exists(myPdfFilePath))
        {
            var subject = "PDF Documents";

            var body = Config.GetContent(ContentParams.CLAIM_DOCUMENT_EMAIL_BODY_TEXT);

            bool success;
            string errorMessage;

            Email.Send(myEmailAddress, subject, body, out success, out errorMessage, myPdfFilePath);
        }

        pdfWriter.Close();
        pdfWriter2.Close();

    }

It would be nice if this capability were somehow incorporated into the current RazorPDF project.

Dan Aschmann
  • 91
  • 1
  • 5
1

why not just get the stream via a web request to the url?

string razorPdfUrl="http://...";
var req = HttpWebRequest.Create(RazorPDFURL);
using (Stream pdfStream = req.GetResponse().GetResponseStream())
{
    ...
}
tony
  • 11
  • 2
  • This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post. – Bruce Dec 10 '15 at 03:48