I created a .NET documentation tool a few years ago under a company Box Software. It allowed viewing of live documentation from .NET solutions/projects and libraries as well as exporting XML comments to web/CHM and other formats.

I have now released this code in GitHub (https://github.com/barry-jones/live-documenter) and I am currently working on converting it to .net core.

It is already a fully functional product. So if you are looking to be able to generate CHM files or MSDN style web documentation for .NET projects it is already everything you need.

I am still working on getting some of the content across from the original sites which are no longer available, but a little more information can be found here (http://livedocumenter.barryjones.me.uk/).