Set Html Document Mode for WebBrowserControl

See more:

C#3.5

HTML5

mode

document

I want to use

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

meta before web page rendered on WebBrowserControl.

I tried

void _browser_Navigated(object sender, WebBrowserNavigatedEventArgs e)
       {
           if (_browser.Document != null)
           {
               if (_browser.Document.GetElementsByTagName("head").Count > 0)
               {
                   HtmlElement headTag = _browser.Document.GetElementsByTagName("head")[0];
                   HtmlElement metaIEDocMode = _browser.Document.CreateElement("meta");
                   metaIEDocMode.SetAttribute("content", "IE-9");
                   metaIEDocMode.SetAttribute("http-equiv", "X-UA-Compatible");
                   headTag.AppendChild(metaIEDocMode);
               }
           }
       }

It doesn't work. What is the correct method for this case.