How do I tell if the browser window is Maximized in Silverlight/C#?

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How do I tell if the browser window is Maximized in Silverlight/C#?

The "Form" maximize feature will not work because I am writing a silverlight app that runs in the browser.

I have tried this:

App.Current.Host.Content.FullScreenChanged += new EventHandler(Content_FullScreenChanged);

but this event handler is not called when I maximize the window