Can i use Windows Phone phone:WebBrowser Widget ?

First i was build to unity Project.When i Add phone:WebBrowser Widget to mainPage.XAML of visual studio project. Error :

A first chance exception of type ‘System.Windows.Markup.XamlParseException’ occurred in System.Windows.ni.dll.

Can i use phone:WebBrowser Widget in Unity Solution?

Please Help me .Thank you

Yes.We can use all Widget(Windows Phone Component) in Unity Solution.WebBrowser,Map,etc. .
But Dont forget to add capability in WMAppManifest.xml