I have been googling for hours and trying to figure this out, and I just can\'t. I have 1 webbrowser control on a form, webbrowser1.
Once I load a page, say google.
You could try to call webbrowser1.Refresh(WebBrowserRefreshOption.Completely). It should refresh the page and show the latest version, something like ctrl+F5 in IE. See here and here more info.
webbrowser1.Refresh(WebBrowserRefreshOption.Completely)