private void UpdateActionAvailability() { network network = (network) getSelectedItem(); // CanRemove = SelectedItems != null && SelectedItems.Count > 0; getSetAsDisplayCommand() .setIsExecutionAllowed( getSelectedItems() != null && getSelectedItems().size() == 1 && network != null && !(network.getis_display() == null ? false : network.getis_display()) && network.getStatus() != NetworkStatus.NonOperational); }