public void ChuyenPhong_Load(int _HoaDonID, int _PhongID)
        {
            HoaDonID = _HoaDonID;
            PhongID = _PhongID;
            LoadingPanel.IsBusy = true;

            Phong1Client = new PhongSVCClient();
            Phong1Client.Phong_GetItemCompleted += new EventHandler<Phong_GetItemCompletedEventArgs>(Phong1Client_Phong_GetItemCompleted);
            Phong1Client.Phong_GetItemAsync(PhongID);

            PhongClient = new PhongSVCClient();
            PhongClient.Phong_GetItems_ByTinhTrangCompleted += new EventHandler<Phong_GetItems_ByTinhTrangCompletedEventArgs>(PhongClient_Phong_GetItems_ByTinhTrangCompleted);
            PhongClient.Phong_GetItems_ByTinhTrangAsync();
        }