问题
I'm hosting MSIE in a winforms form. Unfortunately it insists on running in compatibility mode regardless of if I give it a page that runs in IE8 mode in stand-alone IE. The effect of that is that some content that renders correctly in stand-alone MSIE gets completely mis-aligned and messed up in the hosted control.
Besides document type etc, is there some magic way to tell the webbrowser that I want it to render the page the same way as if I loaded it in stand-alone MSIE?
I don't want to use the registry key override ( http://blogs.msdn.com/b/ie/archive/2009/03/10/more-ie8-extensibility-improvements.aspx ) due to my form being part of an add-in for another app. I don't want to change the IE behavior for the main app and I don't want to change it for other add-ins running under that app. I only want this to work within the browser hosted in my form, not app-wide and not process-wide.
回答1:
I have not tested this, but how about using the META tag, along with the HTTP-EQUIV attribute, to set the X-UA-COMPATIBLE value to IE=8, which instructs the web browser to display a page in IE 8 standards mode. An example would be:
<meta http-equiv="X-UA-Compatible" content="IE=8" />
From this line in the following article it seems that this should work.
By default, applications hosting the WebBrowser Control open standards-based pages in IE7 mode unless the page contains an appropriate X-UA-Compatible header. You can change this by adding the name of the application executable file to the FEATURE_BROWSER_EMULATION feature control key and setting the value accordingly.
回答2:
To change the default behavior of the Web Browser Control running in your application to match what IE itself does, you must set the FEATURE_BROWSER_EMULATION Feature Control Key.
For instance, you can mimic IE8's behavior (allowing sites to render in IE8 standards mode) as follows.
Inside HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main\FeatureControl
Create a new key named FEATURE_BROWSER_EMULATION
Inside that key, add a new REG_DWORD with value 8000 with the name of your application's executable. E.g.:
"YourApp.exe" = dword 8000 (Hex: 0x1F40)
Further details are at: http://blogs.msdn.com/b/ie/archive/2009/03/10/more-ie8-extensibility-improvements.aspx
来源：https://stackoverflow.com/questions/3554314/msies-webbrowser-control-hosted-in-winforms-app-runs-in-compatibility-mode