How to make silverlight page as out of browser programatically

1. For security reasons, Full Screen can only be enabled in an event that was fired by the user, such as a Button click event.

It is possible to go into Full Screen mode without user interaction in Silverlight 4's Trusted Application.

2.A Silverlight-based application can enter full-screen mode only in response to a user-initiated action. This means that you can programmatically switch to full-screen mode
only in a user-input event handler.

3.An elevated application can go full-screen without requiring explicit user-interaction to drive that full-screen mode. So, an application could go full-screen as soon as it loads with something like.

  public MainPage()
        {
            InitializeComponent();
            Loaded += new RoutedEventHandler(MainPage_Loaded);
           
        }

        void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            if (Application.Current.HasElevatedPermissions)
            {
                Application.Current.Host.Content.IsFullScreen = true; 
            }
        }

When (Application.Current.HasElevatedPermissions) is false,it will not set to fullscreenMode.
 If we set Enable running application out of Browser to true,then
Application.Current.HasElevatedPermissions this condition will be true and it set full screen mode to true.
Application.Current.Host.Content.IsFullScreen = true

Please check above code to understand the trusted application.

Hope this will help you.

Thanks.