Gtk.ListStore.IterNChildren C# (CSharp) Méthode

        public int IterNChildren()
        {
            int raw_ret = gtk_tree_model_iter_n_children (Handle, IntPtr.Zero);
            int ret = raw_ret;
            return ret;
        }

 public static void SaveList(ListStore list, string path)
 {
     path = path + "streams.list";
     File.Delete(path);
     for (int i = 0; i < list.IterNChildren(); i++) {
         TreeIter iter;
         list.GetIterFromString (out iter, i.ToString ());
         File.AppendAllText(path, list.GetValue(iter, 0).ToString());
         File.AppendAllText(path, " ");
         File.AppendAllText(path, list.GetValue(iter, 1).ToString());
         File.AppendAllText(path, "\n");
     }
 }