public void Delete(RankDTO rank)
        {
            IWindowManager manager             = new WindowManager();
            DeleteConfirmationViewModel modify = new DeleteConfirmationViewModel();
            bool?showDialogResult = manager.ShowDialog(modify, null, null);

            if (showDialogResult != null && showDialogResult == true)
            {
                RankService.Delete(rank);
            }
            Reload();
        }