TODO: Respond to activation request for a file open picker The following code could not be automatically added to your application ...

        // TODO: Respond to activation request for a file open picker
        //
        // The following code could not be automatically added to your application subclass,
        // either because the appropriate class could not be located or because a method with
        // the same name already exists.  Ensure that appropriate code deals with activation
        // by displaying an appropriate file open picker.
        //