I've read the documentation on this but I am still stuck. Most of the article seems to be about creating a Websharper project, and then integrating that into an existing ASP.NET project. Then at the very end, it says

"We generally advise against using WebSharper alongside ASP.NET for a new application, and recommend instead to simply run a WebSharper Sitelets application to contain the whole application."

However, there are no specifics on how to do this. For example, I have an existing ASP.NET MVC application, written in F#, which renders a third party (DevExpress) control in a razor page. (Note: this control is essentially a webforms control with some MVC support layered on top). I want to get rid of the MVC app entirely, and render this control on a page from within Websharper. How do I do this? Currently my sitelet renders the "Main.html" page that the template created. It seems I need to somehow switch to using Razor, but I can't find an example anywhere on what exactly to do.

Also note that while the documentation also suggests a hybrid approach with the "Sitelets Host Website" template, I'm using WebSharper 4.0 beta, and this doesn't appear to exist yet for 4.0.

Thanks Jim