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PDFSharp-WPF 1.50.4000-beta3b throws exception https://forum.pdfsharp.net/viewtopic.php?f=2&t=3533 |
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Author: | TomasL [ Sun Jan 22, 2017 8:45 pm ] |
Post subject: | PDFSharp-WPF 1.50.4000-beta3b throws exception |
Code that worked in the stable 1.32.3057 now throws "System.NullReferenceException' occurred in PdfSharp-wpf.dll" "Additional information: Object reference not set to an instance of an object." I am using the following code: Code: PdfDocument document = PdfReader.Open(toPath, PdfDocumentOpenMode.Modify); if (document.AcroForm.Elements.ContainsKey("/NeedAppearances") == false) { document.AcroForm.Elements.Add("/NeedAppearances", new PdfBoolean(true)); } else { document.AcroForm.Elements["/NeedAppearances"] = new PdfBoolean(true); } PdfTextField currField = (PdfTextField)document.AcroForm.Fields["txtProjNamn"]; currField.Text = projData.projName; It is the last row above that throws the exception. The document with all fields is created in Acrobat 8 Pro. I moved over to the latest beta today, since I need to use streams for images, after that it does not work anymore. projData.projName is a public static string. |
Author: | Thomas Hoevel [ Mon Jan 23, 2017 8:47 am ] |
Post subject: | Re: PDFSharp-WPF 1.50.4000-beta3b throws exception |
I cannot replicate the issue. A VS solution that includes the PDF file would be nice. See also: viewtopic.php?p=2094#p2094 |
Author: | Fish [ Mon Jan 23, 2017 12:13 pm ] |
Post subject: | Re: PDFSharp-WPF 1.50.4000-beta3b throws exception |
Maybe it's a typo ["txtProjNamn"] and ["txtProjName"] iscorrect |
Author: | TomasL [ Mon Jan 23, 2017 1:41 pm ] |
Post subject: | Re: PDFSharp-WPF 1.50.4000-beta3b throws exception |
Nope, not a typo, I am using a mix of Swedish and English for some reason. Anyway, tried to upload the PDF here, but its to big. (approx 700kB) Anyway, you can find the form at www.tlec.se/Utskriftsform.pdf Ill try to do a small mini project as well. |
Author: | TomasL [ Mon Jan 23, 2017 5:42 pm ] |
Post subject: | Re: PDFSharp-WPF 1.50.4000-beta3b throws exception |
Ok, then I have created a small POE VS2015 Solution, Where do I mail it. The ZIP-file is 1,6 MB. |
Author: | trevorw [ Thu May 25, 2017 9:23 pm ] |
Post subject: | Re: PDFSharp-WPF 1.50.4000-beta3b throws exception |
I saw in another post, PdfTextField has changed in 1.5 beta currField.Text = projData.projName; now needs to be currField.Value = new PdfString(projData.projName); |
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