private void UserControl_Loaded(object sender, RoutedEventArgs e)
 {
     perfilLogic = new PerfilDataLogic();
     cmbPerfiles.ItemsSource = perfilLogic.ListarPerfiles();
     permisoLogic = new PermisoDataLogic();
     gvPermisos.ItemsSource = permisoLogic.SeleccionarActivos();
     perxPerLogic = new PermisosPorPerfilDataLogic();
 }