I am trying to print a PDF file with the PDFViewer and am getting an entirely black page instead of the filled out form that it should be.

Dim viewer as New Aspose.Pdf.Kit.PdfViewer
viewer.openpdffile(outputfile)
viewer.printdocumentwithsetup()
viewer.closepdfFile()

Attached is the PDF file.

I'm assuming that it's because the PDF format is too new.  Any idea when you'll be supporting the latest PDF file format?  Right now I'm looking at shelling to get Adobe Reader to do the printing, not the most elegent solution.


Allen

Hi,

Thank you for considering Aspose.

I am unable to reproduce this error. I have checked it with latest version 2.6.2.0 of Aspose.Pdf.Kit. Please make sure that you are using the latest version of Aspose.Pdf.Kit.

Thanks.

Okay, the printing now works, but stuff that worked before doesn't work now.  The original source PDF file didn't change when I upgraded the Aspose component, but now I get the error that's at the end of this post.
    This is the line that gives the error:
        Dim mend As New PdfFileMend(inStream, outStream)

Allen

    Dim bc As New Aspose.BarCode.BarCodeBuilder

    bc.SymbologyType = Symbology.Pdf417
    bc.CodeText = "072583427000010001" & vbCrLf & "9/15/2007" _
      & vbCrLf & "05" & vbCrLf & "83-999" & vbCrLf & "10281" _
      & vbCrLf & "S" & vbCrLf & "DOE,JANE" & vbCrLf & "JLB" _
      & vbCrLf & "MV(-140)" & vbCrLf & vbCrLf & "40001268"
    bc.CodeLocation = CodeLocation.None
    bc.AutoSize = True
    bc.Pdf417ErrorLevel = Pdf417ErrorLevel.Level2

    Dim Caption As New Aspose.BarCode.Caption("071233427000000000")
    Caption.Visible = True
    Caption.TextAlign = StringAlignment.Center
    Caption.Font = New Font("Times New Roman", 17, Drawing.FontStyle.Bold)

    bc.CaptionBelow = Caption
    bc.CaptionAbove.Visible = False

    bc.Columns = 8
    bc.yDimension = 2

    Dim memStream As New MemoryStream
    bc.Save(memStream, ImageFormat.Jpeg)

    Dim inputFile As String = "g:\aes\Barcodes\mv-140.pdf"
    Dim outputFile As String = "g:\aes\BarCodes\071233427000000000.pdf"

    Dim inStream As New FileStream(inputFile, FileMode.Open)
    Dim outStream As New FileStream(outputFile, FileMode.Create)

    inStream.Seek(0, SeekOrigin.Begin)
    Dim mend As New PdfFileMend(inStream, outStream)
    mend.AddImage(memStream, 1, 350, 720, 580, 800)
    mend.Close()

    mend.Close()
    outStream.Seek(0, SeekOrigin.Begin)
    Dim form As New Aspose.Pdf.Kit.Form(inStream, outStream)

    Dim fld As String

    For Each fld In form.FieldsNames
      If fld.GetTypeCode <> TypeCode.String Then
        MsgBox(fld.GetTypeCode())
      End If
      form.FillField(fld, fld)
    Next

    form.Save()

    outStream.Close()
    inStream.Close()

    Dim viewer As New Aspose.Pdf.Kit.PdfViewer
    viewer.OpenPdfFile(outputFile)
    Dim ps As New System.Drawing.Printing.PrinterSettings
    Dim page As New System.Drawing.Printing.PageSettings
    ps.PrinterName = "HP LaserJet 4300 PCL 6"
    viewer.PrintDocumentWithSettings(page, ps)
    viewer.ClosePdfFile()
    MsgBox("Done")

Give's this error when trying to open PDF:

System.IO.IOException was unhandled
  Message="Invalid pdf format:pdf head signature is not found!"
  Source="Aspose.Pdf.Kit"
  StackTrace:
       at xeb116a323308e2f7.xa780c1549f927915.checkPdfHeader()
       at xeb116a323308e2f7.x7759a935a2782a02.readPdf()
       at xeb116a323308e2f7.x7759a935a2782a02..ctor(Stream is_Renamed, SByte[] ownerPassword)
       at xeb116a323308e2f7.x7759a935a2782a02..ctor(Stream is_Renamed)
       at Aspose.Pdf.Kit.Form.xedff4d4fd296f454()
       at Aspose.Pdf.Kit.Form..ctor(Stream srcStream, Stream destStream)
       at ActivePDF.Form1.btnMV140_Click(Object sender, EventArgs e)
       at System.Windows.Forms.Control.OnClick(EventArgs e)
       at System.Windows.Forms.Button.OnClick(EventArgs e)
       at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
       at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at System.Windows.Forms.ButtonBase.WndProc(Message& m)
       at System.Windows.Forms.Button.WndProc(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
       at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
       at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
       at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       at System.Windows.Forms.Application.Run(ApplicationContext context)
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
       at ActivePDF.My.MyApplication.Main(String[] Args)
       at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()

I have reproduced this error and logged this issue as PDFKITNET-3905. We will try to fix it soon.

---

Tommy Wang
Lead Developer
Aspose Changsha Team
About Us
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Hi astoner,

We have fixed the bug "Invalid pdf format:pdf head signature is not found!" when using PdfFileMend.

Furthermore,I have test your code, In order to finish your task, there maybe exist some problems in your code. I think the right code is like below. Please notic the red part.

BTW:we will release a new version soon, and the new version have solove the problem.

    Dim inputFile As String = "g:\aes\Barcodes\mv-140.pdf"
    Dim outputFile As String = "g:\aes\BarCodes\071233427000000000.pdf"
   
    Dim inStream As New FileStream(inputFile, FileMode.Open)
    Dim outStream As New FileStream(outputFile, FileMode.Create)
    Dim tempStream As New MemoryStream()
    inStream.Seek(0, SeekOrigin.Begin)
    Dim mend As New PdfFileMend(inStream, tempStream)
    mend.AddImage(memStream, 1, 350, 720, 580, 800)
    mend.Close()
    tempStream.Seek(0, SeekOrigin.Begin)
    Dim form As New Aspose.Pdf.Kit.Form(tempStream, outStream)
    Dim fld As String
    For Each fld In form.FieldsNames
      If fld.GetTypeCode <> TypeCode.String Then
        MsgBox(fld.GetTypeCode())
      End If
      form.FillField(fld, fld)
    Next
    form.Save()
    outStream.Close()
    inStream.Close()
    Dim viewer As New Aspose.Pdf.Kit.PdfViewer
    viewer.OpenPdfFile(outputFile)
    Dim ps As New System.Drawing.Printing.PrinterSettings
    Dim page As New System.Drawing.Printing.PageSettings
    ps.PrinterName = "HP LaserJet 4300 PCL 6"
    viewer.PrintDocumentWithSettings(page, ps)
    viewer.ClosePdfFile()
    MsgBox("Done")

---

Allen Wen
Developer
Aspose Changsha Team

About Us
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