PDFsharp & MigraDoc Foundation

Hi,

I've got problem with pdf preview.

This is my C# code:

public partial class PrintForm : Form, IPrintForm
{
private PagePreview.RenderEvent renderEvent;
private System.IO.MemoryStream memStream;
public PrintForm()
{
InitializeComponent();
}
public void ShowPrintForm(System.IO.MemoryStream mem)
{
this.memStream = mem;
this.renderEvent = new PagePreview.RenderEvent(Render);
pagePreview.SetRenderEvent(this.renderEvent);
this.ShowDialog();
}
private void Render(XGraphics gfx)
{
PdfDocument document = PdfReader.Open(this.memStream);
gfx = XGraphics.FromPdfPage(document.Pages[0]);
}

...

}

I'm using VS 2008 Express Edition with PDFSharp v.1.0.898.0
PDFSharp was compiled under VS2008 and Runtime version 2.0.50727.
I'm using PdfSharp.Forms.PagePreview for viewing PDF's.

Problem: I'm receiving blank preview.

When I put this code in Render method:

PdfDocument document = new PdfDocument();
PdfPage page = document.AddPage();
XGraphics gfx = XGraphics.FromPdfPage(page);
XFont font = new XFont("Verdana", 20, XFontStyle.Bold);
gfx.DrawString("Hello, World!", font, XBrushes.Black,
new XRect(0, 0, page.Width, page.Height),
XStringFormat.Center);

.... everything works good.

When I try save document (in Render metod) ... everything works good.

Does anyone know what is wrong ?

Thanks
Adam S.

Hi,

Is there a solution for this problem already? I encountered a similar (if not the same) one - the following code does produce an empty preview.



The code above is an excerpt from the Preview sample Render(XGraphics) method which I modified.

Any help would be much appreciated. TIA

Hello!

It's by design that only XGraphics show in Preview, not imported PDF pages.

Imported pages will show when a PDF file is created (directly or indirectly from the Preview dialogue).

Workaround: Create PDFs directly and show them with Adobe Reader.

_________________
Regards
Thomas Hoevel
PDFsharp Team