private void btnAddDetails_Click(object sender, RoutedEventArgs e)
        {
            var screen = new USDDetailWindow(USDDetailWindow.ADDACTION, null, UsedServices.id);

            this.IsEnabled = false;
            screen.ShowDialog();
            switchToInfoAction();
            this.IsEnabled = true;
        }
        //used services info detail
        private void dgUSDDetails_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            USDDetail ud = dgUSDDetails.SelectedItem as USDDetail;

            if (ud != null)
            {
                var screen = new USDDetailWindow(USDDetailWindow.INFOACTION, ud);
                this.IsEnabled = false;
                screen.ShowDialog();

                this.IsEnabled = true;
            }
            switchToInfoAction();
        }