PDFsharp & MigraDoc Foundation

I can successfully create an on-the-fly pdf using

PdfSharp.Pdf.PdfDocument document = new PdfSharp.Pdf.PdfDocument();
PdfPage page = document.AddPage();
XGraphics gfx = XGraphics.FromPdfPage(page);
--- a series of gfx.DrawStrings to build page
System.IO.MemoryStream stream = new System.IO.MemoryStream();
document.Save(stream, false);
stream.Position = 0;
Response.Clear();
Response.ContentType = "application/pdf";
Response.AddHeader("content-length", stream.Length.ToString());
Response.BinaryWrite(stream.ToArray());
Response.Flush();
stream.Close();
Response.End();

In most cases, I display a preview of a request (as a pdfsharp pdf) and display it in an I-frame. My client approves the request by clicking a button, and I e-mail a link to all appropriate contacts. These contacts can then click the link in the e-mail to regenerate the pdfsharp pdf in a browser window.

My client base has extended beyond my Intranet and I don't want to open my application to external access. I would like to simply modify my application to replace the link in the generated e-mail with an attachment. I used the following code:

1) On the initial preview generation, I save the pdfsharp document to Session
System.Web.HttpContext.Current.Session["pdf"] = document;
2) In the code section that generates the e-mails, I tried using
System.IO.MemoryStream PDFstream = new System.IO.MemoryStream();
((PdfSharp.Pdf.PdfDocument)Session["pdf"]).Save(PDFstream, false);
PDFstream.Position = 0;
Attachment PDFFile = new Attachment(PDFstream, new System.Net.Mime.ContentType("application/pdf"));
PDFFile.ContentDisposition.FileName = "myAttachedFile.pdf";
message.Attachments.Add(PDFFile);

The attachment is created and added to the e-mail, but is blank when clicked. If I open the file in a text editor, it appears to be a pdfsharp generated pdf file (the text is very similar to a pdfsharp pdf file that is originally built in the browser...it's just a bit larger). It seems like I'm missing something simple, like a format or something. Can you assist ?

PS - I'm trying to avoid creating an actual file on a disk that I would need to delete later.

Thanks

Hi!

You can create a new MemoryStream from the byte[] returned by "stream.ToArray());"
If this works then there is a problem with the stream returned by PDF (please let us know so we can investigate this).
If this still doesn't work, the problem is somewhere else (and you can still create a temporary file).

"PDFstream.Position = 0;" is no longer required with current versions of PDFsharp.

_________________
Regards
Thomas Hoevel
PDFsharp Team