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Error message when converting to PDF

Hello,

I am receiving this error message when I try to convert a document to a PDF: 

This exception was originally thrown at this call stack:

    System.Drawing.Graphics.MeasureString(string, System.Drawing.Font, System.Drawing.PointF, System.Drawing.StringFormat)

    Syncfusion.DocIO.Rendering.DrawingContext.MeasureString(string, System.Drawing.Font, System.Drawing.StringFormat, Syncfusion.DocIO.DLS.WCharacterFormat, bool, bool, Syncfusion.Office.FontScriptType)

    Syncfusion.Layouting.MathLayoutContext.LayoutDelimiterSwitch(System.Drawing.RectangleF, Syncfusion.Layouting.LayoutedOMathWidget, Syncfusion.Office.IOfficeMathFunctionBase)

    Syncfusion.Layouting.MathLayoutContext.LayoutOfficeMathFunctions(System.Drawing.RectangleF, Syncfusion.Layouting.LayoutedOMathWidget, Syncfusion.Office.IOfficeMathBaseCollection)

    Syncfusion.Layouting.MathLayoutContext.LayoutOfficeMath(System.Drawing.RectangleF, Syncfusion.Office.IOfficeMath)

    Syncfusion.Layouting.MathLayoutContext.LayoutFractionSwitch(System.Drawing.RectangleF, Syncfusion.Layouting.LayoutedOMathWidget, Syncfusion.Office.IOfficeMathFunctionBase)

    Syncfusion.Layouting.MathLayoutContext.LayoutOfficeMathFunctions(System.Drawing.RectangleF, Syncfusion.Layouting.LayoutedOMathWidget, Syncfusion.Office.IOfficeMathBaseCollection)

    Syncfusion.Layouting.MathLayoutContext.LayoutOfficeMathCollection(System.Drawing.RectangleF, Syncfusion.Layouting.LayoutedMathWidget, Syncfusion.Office.IOfficeMaths)

    Syncfusion.Layouting.MathLayoutContext.Layout(System.Drawing.RectangleF)

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


Can you lend any insight into why this might be happening or what it pertains to? 


Thanks!


7 Replies 1 reply marked as answer
AA Akash Arul Syncfusion Team February 5, 2024 08:34 AM UTC

Hi Natalie,

We suspect that you are facing an issue while converting a Word document with mathematical equation to PDF. We tried to reproduce the reported problem with the mathematical equations, but it works properly on our end. For your reference, we have attached the sample application which we used at our end to reproduce the reported problem and it can be downloaded from the below attachment.

Can you please try our sample application at your end using your Word document?
If you are still facing the issue means, we suspect that the issue might be due to the input Word document. So, kindly share the input Word Document to reproduce the reported issue.

Note: If you have any confidential data in your input Word document, please replace with some dummy data and provide us the same. We just need your document to recreate the problem you face. So, once investigated the issue, we will delete the document permanently from our side and do not share with anyone.

If you are doing some other process in the code, please modify the sample attached and share it as issue reproducible sample. Thereby, we will proceed further to replicate the same problem at our end and will provide the more details at the earliest.

Regards,
Akash.


Attachment: WordToPDFMathEquation_479af5fa.zip

NW Natalie Westphal February 5, 2024 06:35 PM UTC

Attached is the word document that I am having the issue with displaying. 

If I first save the document as a word document, open it as a FIleStream, create a WordDocument from the FileStream, and then convert it to a PDF, the error message is not thrown. It is only thrown when I create the WordDocument programmatically and then try to convert to PDF using the following code: 

            WordDocument document = BuildSyncfusionReport(serviceProvider, documentInfo);


            using (DocToPDFConverter converter = new())

            {

                converter.Settings = new DocToPDFConverterSettings() { ExportBookmarks = ExportBookmarkType.Bookmarks };


                //Converts Word document into PDF document

                using (PdfDocument pdfDocument = converter.ConvertToPDF(document))

                {

                    //Saves the PDF document

                    pdfDocument.Save(fileName);

                }

            };


Attachment: SyncfusionReport_8e151be1.zip


AA Akash Arul Syncfusion Team February 6, 2024 12:29 PM UTC

Natalie, as you mentioned that the issue occurs only when you create the Word document programmatically and then convert it to PDF, kindly share the code that is used inside the BuildSyncfusionReport method to prepare similar document on our end and reproduce the issue.

In the input Word document we can find multiple equations and contents.

If you are facing difficulties to share the entire code, comment out some part of the implementation and narrow down the part of the code which causes the issue. Now share the simplified code snippet. Thereby, we will proceed further to replicate the same problem at our end and will provide the details at the earliest.


NW Natalie Westphal February 7, 2024 06:23 PM UTC

I have attached a project in which the error can be reproduced. It seems to be


Attachment: PDF_Convert_Error_e679b48f.zip

AA Akash Arul Syncfusion Team February 8, 2024 11:20 AM UTC

Natalie, we have reproduced the reported problem “Exception is thrown while converting a Word document with Equation to PDF” on our end. We will validate this issue and update you with more details by the starting of next week.


AA Akash Arul Syncfusion Team February 12, 2024 11:32 AM UTC

Natalie, we have confirmed that the reported issue “Argument Exception is thrown while converting a Word document to PDF with MathML Equation” is a defect and we have logged a defect report. We will include the fix for this defect in our Weekly NuGet release which is estimated to be available on the end of February 2024.

The status of this bug can be tracked through the below link:
https://www.syncfusion.com/feedback/50797/argument-exception-is-thrown-while-converting-a-word-document-to-pdf-with-mathml

Disclaimer: “Inclusion of this solution in the weekly release may change due to other factors including but not limited to QA checks and works reprioritization.”


AN Anto Nihil Sahaya Raj Syncfusion Team February 27, 2024 01:39 PM UTC

Natalie, as promised earlier, we have included the fix for the reported bug with “Argument Exception is thrown while converting a Word document to PDF with MathML Equation” in our latest weekly NuGet release (v24.2.8).

Root cause of the issue:

1.       Reported ArgumentException is thrown while measuring the MathML text with a disposed font object

  1. When updating the TOC or document fields, internally we are performing our own layouting algorithm to find the page numbers of the document.

  2. Here, the MathML font object gets disposed after the first layouting (UpdateTableOfContents) process.

  3. So, when we try to measure the MathML text a second time (UpdateTableOfContents) with a disposed font object, we face this ArgumentException.

Please use the below link to download our latest weekly NuGet:
https://www.nuget.org/packages/Syncfusion.DocToPDFConverter.Wpf/24.2.8

The status of this bug task can be tracked through the below link:
https://www.syncfusion.com/feedback/50797/argument-exception-is-thrown-while-converting-a-word-document-to-pdf-with-mathml

Note: We will include this fix in our 2024 Volume 1 Main release, which will be available in the end of March 2024.


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