AngleSharp and XHTML round-trip

Question

I'm trying to parse an XHTML file using AngleSharp, make a change, then output it. However, I'm having some issues getting the output to match the input.

• If I use the XML parser and either the XMLMarkupFormatter or the HtmlMarkupFormatter I get no self-closing tags (all are <img></img> ) and no XML declaration.

• If I use the HTML parser and the HTMLMarkupFormatter I get XML invalid self-closing tags (all are simply <img> ) and no XML declaration.

• If I use the HTML parser and the XMLMarkupFormatter I get nice self closing tags ( <img /> ), and the XML declaration - however, the XML declaration is picked up as a comment and outputted as <!-- <?xml version="1.0" encoding="UTF-8"?> -->

Is there a way around this or do I need to write my own MarkupFormatter ?

Answer 1

Simple answer: It sounds like you need to provide your own MarkupFormatter .

There has been some effort to come up with an XhtmlMarkupFormatter , but this component has unfortunately not been realized so far. I imagine such a component may combine the serialization from both, the existing HTML and the available XML formatter.

Maybe this issue on the AngleSharp repo helps you.