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PDFPrinting problem

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PdfViewer and PdfViewerNavigator
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Jeffrey asked on 18 Jun 2014, 02:19 PM
When I run the following code I get the attached error. If I comment out this line the PDF does load and display correctly so I know that is now the issue. It can also be printed if I click the print button on the navigator. I want to be able to send it print automatically (either via print preview or directly with print). Not sure why this error is occurring.

Imports iTextSharp.text.pdf
Imports System.IO
Imports iTextSharp.text
Public Class Form1
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Dim document As New Document()
        Dim pdfStream As New MemoryStream()
        Dim pdfwriter As PdfWriter = pdfwriter.GetInstance(document, pdfStream)
        Dim over As PdfContentByte = pdfwriter.DirectContent
        'Add logo.
        'Dim imagelog As iTextSharp.text.Image = iTextSharp.text.Image.GetInstance(My.Resources.manalivelogo, System.Drawing.Imaging.ImageFormat.Jpeg)
        'imagelog.Transparency = New Integer() {255, 255}
        'imagelog.SetAbsolutePosition(25, 800)
        document.Add(New iTextSharp.text.Phrase("More sample text for signature demo"))
        Dim tr As BaseFont = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.WINANSI, BaseFont.EMBEDDED)
        Dim btr As BaseFont = BaseFont.CreateFont(BaseFont.TIMES_BOLD, BaseFont.WINANSI, BaseFont.EMBEDDED)
        over.SetFontAndSize(btr, 12)
        over.ShowTextAligned(iTextSharp.text.Element.ALIGN_MIDDLE, "2117 Maryland Avenue, Baltimore, MD 21218", 45, 780, 0)
        over.ShowTextAligned(iTextSharp.text.Element.ALIGN_MIDDLE, "Phone: 410-837-4892 Fax: 410-837-0639", 55, 768, 0)
        pdfwriter.CloseStream = False
        pdfStream.Position = 0
    End Sub

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Telerik team
answered on 20 Jun 2014, 10:53 AM
Hi Jeffrey,

Thank you for writing back.

The reason for this exception is that at the point where the PrintPreview is called the document is still not created and loaded. If you want to show the print preview dialog right after the document is loaded you can use the DocumentLoaded event:
Public Sub New()
        AddHandler radPdfViewer1.DocumentLoaded, AddressOf radPdfViewer1_DocumentLoaded
End Sub
Private Sub radPdfViewer1_DocumentLoaded(sender As Object, e As EventArgs)
End Sub

Please let me know if there is something else I can help you with. 
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