WebBrowser - download page without displaying it

[sv13]

hi, my app have to visit many pages and i want to optimize it a little bit,
i have already disabled images/videos/sounds downloading(i care only about html content), is there a way to download page with webbrowser but do not display it ? i am well aware of httpwebrequest etc. but html content downloaded this way is different from browser source code of website, probably something with ajax etc

EDIT:
solution where i dont need webbrowser, and downloaded html content will be exactly the same as browser source will be much more appreciated