How do I force "Compatibility View" ON in IE9 on a page with a proper Doc Type?

Question

I have a site that is nearly all standards compliant, and expects to be that way across all browsers. However, I have a specific page on my site that I want to render in a standards compliant way in Firefox, Chrome, Opera, and Safari, but due to a very annoying issue involving Zoom Levels in the Microsoft SSRS Report Viewer 10.0.0.0 control (See here for a more complete description), I need to render the page in Compatibility View mode in IE9.

Solution

For IE9, add <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8" /> or add <?xml version="1.0" encoding="UTF-8"> as first line in your page. See http://webdesign.about.com/od/metataglibraries/p/x-ua-compatible-meta-tag.htm for details.

Comments

[jgv999]

I think this forces on IE9 standards mode, which is exactly the opposite of what I want. I want to force ON compatibility mode (in IE9), even though I have a valid doctype declaration.

[jgv999]

Unfortunately adding the meta tag does not seem to cause the page to render in compatibility view. It simply renders in IE8 standards mode because my doctype is correct :). - This is the behavior I am trying to turn on automatically on this particular page windows.microsoft.com/en-US/windows7/… if that helps.

[jgv999]

Never mind, it seems I had to close IE9, each time I was testing a different scenario. Otherwise, it seemed it liked to use the same behavior. Not sure what was going on there. Thanks!