WebBrowser Control IE8 Compatibility Mode On/Off Switch

I am having a IE8 compatibility issue while using the WebBrowser control to navigate to a website. The strange thing is sometimes the website works, but more than likely it wont. I can refresh the page sometimes and it works as well.

Just going to the page in IE8 I experienced the same CSS rendering problems so I switched to compatibility mode and it refreshed and rende开发者_如何学编程red correctly.

Is there a way to simulate this effect for the WebBrowser control. I want to be able to click a button and toggle the modes off and on like you can do in Internet Explorer.

Is this possible? If so, anyone know how?

Thanks

Would this post on IEBlog about WebBrowser rendering modes and IE8 help? Seems like you have to set the rendering mode specific to your application using a key in the registry.

I know the registry entry answer has been posted, so I thought I'd offer an alternative.

Do you own the site and have permissions for the server it runs on? If so, you can set the X-UA-Compatible header to be sent for every page on the site/server. See http://msdn.microsoft.com/en-us/library/cc288325(VS.85).aspx#Servers for information plus links for Apache/IIS7.

You can force rendering mode for embedded WebBrowser inside your application using "Internet Feature Controls" in IE registry keys:

HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
   SOFTWARE
      Microsoft
         Internet Explorer
            Main
               FeatureControl
                  FEATURE_BROWSER_EMULATION
                     YouApp.exe = (DWORD) 00000000 (see value below)

• Value 9999 (0x270F)
  Windows Internet Explorer 9. Webpages are displayed in IE9 Standards mode, regardless of the !DOCTYPE directive.

• Value 9000 (0x2328)
  Internet Explorer 9. Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode.

• Value 8888 (0x22B8)
  Webpages are displayed in IE8 Standards mode, regardless of the !DOCTYPE directive.

• 8000 (0x1F40)
  Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode.

• 7000 (0x1B58)
  Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode.

+1 if you find value to always run WebBrowser at currently installed version.

Source: http://msdn.microsoft.com/en-us/library/ee330730%28VS.85%29.aspx#browser_emulation