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2
Votes

NullReferenceException when converting specific docx to pdf

We have a specific Word document that will cause an exception in our application when we try to convert it to PDF. A sample document illustrating the issue is attached. Please notice the hidden image behind the text.


The following code causes an exception when used with the attached document:

using var wordDocument = new WordDocument(stream, Syncfusion.DocIO.FormatType.Automatic);

using var render = new DocIORenderer();

using var pdfDocument = render.ConvertToPDF(wordDocument);


Exception details:

System.NullReferenceException

  HResult=0x80004003

  Message=Object reference not set to an instance of an object.

  Source=Syncfusion.DocIO.Portable

  StackTrace:

   at Syncfusion.DocIO.DLS.WParagraph.IsPreviousParagraphMarkIsHidden()

   at Syncfusion.Layouting.LCLineContainer.IsNeedToUpdateIntersectingBounds(WParagraph currentParagraph)

   at Syncfusion.Layouting.LCLineContainer.DoLayoutChild(LayoutContext childContext)

   at Syncfusion.Layouting.LCContainer.Layout(RectangleF rect)

   at Syncfusion.Layouting.LCContainer.DoLayoutChild(LayoutContext childContext)

   at Syncfusion.Layouting.LCContainer.Layout(RectangleF rect)

   at Syncfusion.Layouting.LCContainer.DoLayoutChild(LayoutContext childContext)

   at Syncfusion.Layouting.LCContainer.Layout(RectangleF rect)

   at Syncfusion.Layouting.LCContainer.DoLayoutChild(LayoutContext childContext)

   at Syncfusion.Layouting.LCContainer.Layout(RectangleF rect)

   at Syncfusion.Layouting.Layouter.Layout(IWidgetContainer widget, ILayoutProcessHandler handler, DrawingContext dc)

   at Syncfusion.DocIO.DLS.Rendering.DocumentLayouter.LayoutPages()

   at Syncfusion.DocIO.DLS.Rendering.DocumentLayouter.Layout(IWordDocument doc)

   at Syncfusion.DocIORenderer.DocIORenderer.ConvertToPDF(WordDocument wordDocument)