private void Button_Click_6(object sender, RoutedEventArgs e)
        {
            File_Manager fm = new File_Manager();

            fm.Show();
            Speak_Listen.FMInit(fm);
        }
        public static void FMInit(File_Manager obj)
        {
            EnableGrammar(ref FileManagerGrammar, true);
            fm = obj;
            Tuple <int, int> tp = fm.GetItemRange();

            fmFirstItemNo = tp.Item1;
            fmLastItemNo  = tp.Item2;
            LoadDynamicGrammer();
            recog.RequestRecognizerUpdate();
        }