public List<Table> GetAvailableTable(DateTime date)
        {
            using (DinningService.DinningServiceClient proxy = new DinningService.DinningServiceClient())
            {
                try
                {
                    proxy.Open();

                    return proxy.GetTable(date);

                }
                catch (FaultException<HCSMSException> ex)
                {
                    raiseError(ex);
                    return null;
                }
                catch (Exception ex)
                {
                    raiseError(ex);
                    return null;
                }
                finally
                {
                    proxy.Close();
                }
            }
        }
        public void ChangeItem(Dictionary<Item, Item> anItemPair)
        {
            try
            {

                using (DinningService.DinningServiceClient proxy = new DinningService.DinningServiceClient())
                {
                    proxy.ChangeItem(Table.Number, anItemPair);
                }
            }
            catch (FaultException<HCSMSException> ex)
            {
                raiseError(ex);
            }
            catch (Exception ex)
            {
                raiseError(ex);
            }
        }