private void ChbChangeIfChecked_CheckChanged(object sender, RoutedEventArgs e) { if (!IsLoaded) { return; } if (ChbChangeIfChecked.IsChecked == true) { RadioButtonHelper.SetCheckedContent(RdbCustom1, "Checked !"); RadioButtonHelper.SetCheckedContent(RdbCustom2, "Checked !"); } else { RadioButtonHelper.SetCheckedContent(RdbCustom1, null); RadioButtonHelper.SetCheckedContent(RdbCustom2, null); } }