private void LoadBillsServices(List <ServiceMapped> services = null)
        {
            LazyWorker <ServiceMapped> .LoadAllToGridView
            (
                ServiceListGridView,
                new string[]
            {
                "Id", "ServiceName", "Price", "RoomId",
                "BelongToRoom", "Count", "BillId"
            },
                services ?? LessLazyWorker.GetMappedServiceByBill(currentBill.Id)
            );

            ServiceListGridView.Columns["Id"].Visible           = false;
            ServiceListGridView.Columns["RoomId"].Visible       = false;
            ServiceListGridView.Columns["BillId"].Visible       = false;
            ServiceListGridView.Columns["Filter"].Visible       = false;
            ServiceListGridView.Columns["BillDetailId"].Visible = false;

            ServiceListGridView.Columns["ServiceName"].HeaderText  = "Tên dịch vụ";
            ServiceListGridView.Columns["Price"].HeaderText        = "Giá";
            ServiceListGridView.Columns["Count"].HeaderText        = "Số lượng";
            ServiceListGridView.Columns["BelongToRoom"].HeaderText = "Thuộc về phòng";

            ServiceListGridView.Columns["ServiceName"].Width             = 150;
            ServiceListGridView.Columns["Price"].DefaultCellStyle.Format = "### ### ### ###";
            ServiceListGridView.Columns["Price"].AutoSizeMode
                = DataGridViewAutoSizeColumnMode.AllCells;
            ServiceListGridView.Columns["Count"].Width = 100;
            ServiceListGridView.Columns["BelongToRoom"].AutoSizeMode
                = DataGridViewAutoSizeColumnMode.AllCells;
        }