There is this question: How to format Visual Studio XML documentation for display on the web, which is similar to what I want. But the answers for this question are all very old and the tools mentioned (sandcastle, docu, NDoc, AutoHelp) are all outdated and not maintained anymore since years.
Is there a modern tool that generates a PDF (or static HTML) from XML doc strings in a .NET project?
We use Doxygen (http://www.doxygen.nl/). There's plenty options to adjust it and use multiple languages like C# / VB.NET and much more.