You must call pdfStamper.Close() even if you set CloseStream to false. There
are a lot of streams floating around, I advise you to read
HttpContext.Current.Request.InputStream to a byte[] and see what you got and do
a pdfFlat.ToArray() to check for the flattened pdf integrity before further
processing.
Paulo
________________________________
From: Brian English [mailto:[email protected]]
Sent: Friday, February 18, 2011 5:34 PM
To: [email protected]
Subject: [iText-questions] ITextSharp, FDF problem.
Hi,
I posted to the itextsharp mailing list and got a response that it had been
closed, and to use the itext mailing list. Maybe someone can help me with this?
We currently have a site which will have a pdf which will post the FDF to a
url. The idea is, once the FDF posts to the url, we have some asp.net (vb.net)
code that will grab the data, flatten it and send an email to a user (basically
send them the pdf filled in). As of yet, I have been unable to get this to
work. Below is what I am currently doing (this is a variation of an example
that we found online at: http://asp-net-whidbey.blogspot.com/
Please note the below example is from a dotnetnuke module, however, for the
purpose of this, you can ignore the dnn parts:
When the fdf is posted to our page, the page load will fire, and this part
appears to be functioning correctly:
Protected Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Me.lblContent.Visible = False
If String.Compare(HTTPContext.Current.Request.ContentType,
"application/vnd.fdf", true) = 0 Then
ProcessPDF()
End If
End Sub
I may have some incorrect assumptions here. This is my assumptions:
pdfformfilename is the pdf file, that we flatten the data to. I need to read
the fdf from HTTPContext.Current.Request.InputStream. Basically, we load the
pdf into pdfreader. We create pdfstamper passing in pdfreader and pdfflat. We
set the data by using setFields. After this, we save the file to the server,
create an email and set the attachment. A corrupt pdf is being sent, so it is
working, almost, however, I think I may have some misunderstandings on how some
of this works.
Private Sub ProcessPDF()
Dim pdfFormFileName As String =
HttpContext.Current.Server.MapPath("NHCS_Employment_Application_20110126_Fillable.pdf")
Dim pdfFlat As MemoryStream = New MemoryStream()
Dim pdfreader As PdfReader = New PdfReader(pdfFormFileName)
Dim pdfStamper As PdfStamper = New PdfStamper(pdfreader, pdfFlat)
Dim fdfReader As FdfReader = New
FdfReader(HttpContext.Current.Request.InputStream)
Dim pdfForm As AcroFields = pdfStamper.AcroFields
pdfForm.SetFields(fdfReader)
pdfStamper.FormFlattening = True
pdfStamper.Writer.CloseStream = False
'pdfStamper.Close()
Dim saveTo As String =
HttpContext.Current.Server.MapPath(String.Format("/Portals/0/{0}.pdf",
Guid.NewGuid.ToString().Replace("-", "").Replace(" ", "")))
Dim pdfStream As MemoryStream = New MemoryStream()
Dim saveStream As FileStream = New FileStream(saveTo,
FileMode.Create, FileAccess.Write)
pdfFlat.WriteTo(saveStream)
pdfFlat.Flush()
'ReadWriteStream(pdfStream, saveStream)
'saveStream.Flush()
saveStream.Close()
pdfFlat.Close()
Send(saveTo)
Me.lblContent.Visible = True
End Sub
Private Function LoadStream(ByVal s As Stream) As Stream
Dim target As Stream = New MemoryStream()
Dim length As Integer = 256
Dim buffer(length) As Byte
Dim bytesRead As Integer = s.Read(buffer, 0, length)
While bytesRead > 0
target.Write(buffer, 0, length)
bytesRead = s.Read(buffer, 0, length)
End While
s.Close()
Return target
End Function
Private Sub ReadWriteStream(ByRef s1 As Stream, ByRef s2 As Stream)
Dim length As Integer = 256
Dim buffer(length) As Byte
Dim bytesRead As Integer = s1.Read(buffer, 0, length)
Dim totalbytes As Integer = 0
While bytesRead > 0
s2.Write(buffer, 0, length)
totalbytes = bytesRead + totalbytes
bytesRead = s1.Read(buffer, 0, length)
End While
s1.Close()
End Sub
Private Sub Send(ByVal attachement As String)
Dim fromaddress As String =
"[email protected]<mailto:[email protected]>"
Dim toaddress As String =
"[email protected]<mailto:[email protected]>"
Dim bcc As String = ""
Dim subject As String = "New employment application"
Dim body As String = "Please see the attached application"
Dim bodytype As String = "HTML"
Dim smtpUser As String =
Entities.Host.HostSettings.GetHostSetting("SMTPUser")
Dim smtpPassword As String =
Entities.Host.HostSettings.GetHostSetting("SMTPPassword")
Dim smtpServer As String =
Entities.Host.HostSettings.GetHostSetting("SMTPServer")
Dim smtpAuthentication As String =
Entities.Host.HostSettings.GetHostSetting("SMTPAuthentication")
DotNetNuke.Services.Mail.Mail.SendMail(fromaddress, toaddress, bcc,
subject, body, attachement, bodytype, smtpServer, smtpAuthentication, smtpUser,
smtpPassword)
End Sub
We are using itextsharp.dll version 5.0.5. I have a client who is currently
waiting on some feedback to when I can have this functionality to him. Any
help AT ALL would be appreciated.
Brian
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