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Editorial Team
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Asked: 2026-05-27T04:23:47+00:00

I have a frame control in a WPF app which has an HTML page

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I have a frame control in a WPF app which has an HTML page as a source. The HTML page uses HTML5 features, mostly for a video.

However I can’t seem to get it to work in the frame control. I already checked this question here on StackOverflow which points to this page.

If I’m understanding correctly, the default behaviour for frame controls is to render in IE7 mode which explains why the video doesn’t work. I’ve tried adding the application to the registry as described in the second page I’ve linked but somehow I’m either doing it wrong or it doesn’t work for me.

I’ve set the name of my application as a DWORD key and the value to 0x00002328 in the registry for both:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION

and

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION

This at least seems to get the rendered browser into IE9 mode – according to a little script I use to detect the browser. Still no video, though. When I run the same HTML page in an IE9 browser the video displays correctly.

Does anybody have any idea on how to solve this or whether it is solvable at all?

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1 Answer

  1. Editorial Team

    Someone helped solving the issue in the MSDB forums: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/87e41b0d-145d-4438-958e-c8b3a0a969d3

    The important thing seems to be adding this meta information to the html:

    <meta http-equiv='X-UA-Compatible' content='IE=9' />

    That seems to do the trick.

    <!DOCTYPE html>
<html>
<head>
    <meta http-equiv='Content-Type' content='text/html; charset=unicode' />
    <meta http-equiv='X-UA-Compatible' content='IE=9' /> 
    <title></title>
</head>
<body>
    <div>
         <video autoplay='autoplay' preload='metadata'>
            <source src='test_video.mp4' type='video/mp4' />
        </video>
    </div>
</body>
</html>
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