private void OnReasonSelected(int?reasonId)
        {
            var    rid = reasonId.GetValueOrDefault(0);
            Reason r   = AppServices.MainDataContext.Reasons[rid];

            if (r.ReasonType == 0)
            {
                SelectedTicket.VoidSelectedItems(rid);
            }
            if (r.ReasonType == 1)
            {
                SelectedTicket.GiftSelectedItems(rid);
            }
        }