HtmlAgilityPack LoadFromBrowser method not found

The LoadFromBrowser method requires the WinForm WebBrowser to work.

Since there is not WebBrowser in .NET Core 2.0, this method is not available.

This method could be available in the future by replacing the WebBrowser by an open source browser but there is currently no short-term plan for it.

EDIT: Answer comment

Is there still no solution for this?

I didn't try it, but some package support web browser for .NET Standard such as : https://www.nuget.org/packages/Selenium.WebDriver

So perhaps if you use this package to retrieve the HTML and use it with HAP, that will work.