PDFsharp & MigraDoc Foundation

PDFsharp - A .NET library for processing PDF & MigraDoc Foundation - Creating documents on the fly
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PostPosted: Sun Oct 06, 2013 5:32 pm 
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Hi,

When using PDFSharp on Windows Azure Web Site, I got a System.OutOfMemoryException in the XGraphics.FromPdfPage(PDfPage) method.

The system is not Under memory pressure during this problem. It works well if I execute this outside of Windows Azure Web Site.

You cand find the stacktrace below:

at System.Drawing.Graphics.FromHwndInternal(IntPtr hwnd)
at System.Drawing.Graphics.FromHwnd(IntPtr hwnd)
at PdfSharp.Drawing.XGraphics..ctor(PdfPage page, XGraphicsPdfPageOptions options, XGraphicsUnit pageUnit, XPageDirection pageDirection)
at PdfSharp.Drawing.XGraphics.FromPdfPage(PdfPage page)
at Alpha.Intra.Dossiers.Documents.BonCommande.GenerateDoc(PdfDocument document) in c:\code\Main\Alpha\Intra\Dossiers\Documents\BonCommande.ashx.cs:line 215
at Alpha.Intra.Dossiers.Documents.BonCommande.ProcessRequest(HttpContext context) in c:\code\Main\Alpha\Intra\Dossiers\Documents\BonCommande.ashx.cs:line 203
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Do you have an idea of how to fix this?

Thanks a lot.
Regards
Benjiiim


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PostPosted: Mon Oct 07, 2013 9:13 am 
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Location: Cologne, Germany
Hi!

Have you tried the WPF build instead of the GDI+ build?

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Thomas Hoevel
PDFsharp Team


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PostPosted: Mon Oct 07, 2013 9:27 am 
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Thanks for your quick answer.

I have not tried yet. Can I use the WPF build in an ASP.NET application?

http://www.pdfsharp.net/NuGetPackage_PDFsharp-WPF.ashx states that "This build of PDFsharp is intended to be used in WPF desktop applications. In ASP.NET web applications PDFsharp (GDI) should be used."

Thanks


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PostPosted: Mon Oct 07, 2013 8:55 pm 
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Hi Thomas,

An other question: the Nuget package for the WPF version doesn't seem to be available.
I can't find it on Nuget http://www.nuget.org/packages?q=PDFsharp

Can you advise?

Thanks a lot.


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PostPosted: Tue Oct 08, 2013 9:14 am 
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You can find the binaries and the full source code on SourceForge or CodePlex. The WPF version is not yet on NuGet.

I heard from Stefan that FromHwnd() is not working on Azure servers. He said he would look at it.
He couldn't tell me whether the WPF build would work on Azure.

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Thomas Hoevel
PDFsharp Team


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PostPosted: Tue Oct 08, 2013 12:03 pm 
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Hi,

I confirm that the root cause is on Windows Azure Web Site. Some System.Drawing features has been desactivated as they are not supported in a server environments.

I have found and tried the WPF version yesterday and it works well, with no change in the code, which is great. :-)

Having the WPF version on Nuget would be awesome.

Thanks for the answers and for the great work you are doing on PDFSharp.

Regards,


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PostPosted: Mon Apr 21, 2014 11:57 am 
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Hi Thomas,

I can see a PDFsharp-MigraDoc-WPF package on Nuget https://www.nuget.org/packages/PDFsharp-MigraDoc-WPF/

It doesn't seem to be an official package (not the same author).
Is there a plan to create an official package?

Thanks
Regards,


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PostPosted: Tue Apr 22, 2014 7:50 am 
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benjiiim wrote:
Is there a plan to create an official package?
Yes, but I don't know when it will be published.

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Thomas Hoevel
PDFsharp Team


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PostPosted: Fri Jan 28, 2022 6:15 pm 
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I'm trying to generate a PDF file in a web api hosted in Azure as an App Service. First, I was using PDFSharp and Mirgradoc and after reading this post I uninstall them to install PDFSharp Migradoc WPF as suggested in the discussion. Now, I'm getting this error message: "One or more errors occurred. (Could not load file or assembly 'PresentationCore, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. The system cannot find the file specified.)".

Is it possible to generate PDF files in an Azure App Services applications? What am I missing after installing the WPF version?


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