public CheckOutWindow(IRoom rm)
        {
            room = rm;
            var book = facade.GetActiveBookings(null);

            foreach (IBooking bktemp in book)
            {
                if (bktemp.RoomID == room.ID)
                {
                    booking = bktemp;
                    break;
                }
            }
            InitializeComponent();
            InitializeWindowContent();
        }
 private void SearchByResNoBtn_Click(object sender, RoutedEventArgs e)
 {
     if (string.IsNullOrWhiteSpace(CheckInCheckOutSearchTbx.Text))
     {
         MessageBox.Show("请填写一个订单号!");
     }
     else
     {
         try
         {
             searchbyRooms = false;
             CheckInCheckOutDataGrid.ItemsSource = facade.GetActiveBookings(CheckInCheckOutSearchTbx.Text);
             if (CheckInCheckOutDataGrid.Items.Count == 0)
             {
                 MessageBox.Show("找不到订单");
             }
         }
         catch (Exception)
         {
             MessageBox.Show("订单号只能为数字!");
         }
     }
 }