Overflow exception in ReadLookAheadCharacter in WPF-Samples-main\WPF-Samples\Sample Applications\HtmlToXamlDemo

[Kiraski2023]

I have an WPF application in which i am using the classes (htmlLexicalAnalyzer.cs, HtmlToXAMLConverter, etc.) from the sample application HtmlToXAMLDemo (the main repo).

I have changed the namespace of that classes for mine only.

Then in my physical pc is working correctly (no errors nor exceptions).

Then I create an MSI and deploy my WPF application to a new clean and fresh pc (a virtual machine). After installation I execute it and I get the below exception:

System.OverflowException: Arithmetic operation resulted in an overflow.
at myApp.Converters.HtmlConverter.HtmlLexicalAnalyzer.ReadLookAheadCharacter()
at myApp.Converters.HtmlConverter.HtmlLexicalAnalyzer.GetNextCharacter()
at myApp.Converters.HtmlConverter.HtmlLexicalAnalyzer.GetNextTagToken()
at myApp.Converters.HtmlConverter.HtmlParser.ParseHtmlContent()
at myApp.Converters.HtmlConverter.HtmlToXamlConverter.ConvertHtmlToXaml(String htmlString, Boolean asFlowDocument)
at myApp.UI.HtmlRichTextBoxBehavior.OnValueChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)

It looks like there is something wrong in ReadLookAheadCharacter that is causing this exception in some particular scenario like mine.

Please, could you have a look at it and fix it? Thanks in advance.

[anjali-wpf]

@Kiraski2023 For me it is working fine, could you please give it another try and still if it doesn't work then share the sample HTML which you are trying to convert here.