Script runs slower in the dotnet WebBrowser control

Question

I use the WebBrowser control and Smooth Div Scroll in my winforms application to render a html marquee. I downloaded the sample and added

autoScrollingInterv         


        

Answer 1

As I understand it, the issue you are dealing with is a versioning issue with the WebBrowser Control rendering in IE 7 Standard Mode and the actual WebBrowser you are using in IE is either IE 8 or IE 9, and it works there, yet your JQuery/JavaScript or CSS inclusions are not working in IE 7.

Let me tell you this straight up. The default rendering engine on the webbrowser control is fixed to ensure compatibility across all platforms.

Basically, if you're installed browser is IE 7 - IE 9, then the rendering engine used is IE 7.0 only (by default).

If, however, your installed IE version is IE 6 or below, then the rendering engine used is IE 4.0 (not kidding), unless of course you set it otherwise.

There is a misconception that WebBrowser control uses whatever is currently installed (current IE version) but this is not true, since they do this to reduce backward compatibility issues. You can see (as proof) that this really is your problem by going to www.whatsmyuseragent.com in your normal browser, and then going to that website again in your WebBrowser control, you will see that it says MSIE 7.0 :).

You can set it to use the current installed version of internet explorer, either using a META tag in-page, or editing the Registry on the machine where the webbrowser control will run (editing for Current_User and Local_Machine will both work).

WebBrowser control will (normally) use whatever version of IE you have installed, but for compatibility reasons it will render pages in IE7 Standards mode by default.

If you want to take advantage of new IE9 features, you should add the meta tag inside the tag of your HTML page.

This meta tag must be added before any links to CSS, JavaScript files etc that are also in your to work properly though (only other tags or the