public void DisplayDataTables() { ServerFactory serverFactory = (ServerFactory)Session[Constants.ServersFactory]; serverGrid.DataSource = serverFactory.GetServerDataTable(); serverGrid.DataBind(); MenuItemFactory menuFactory = (MenuItemFactory)Session[Constants.MenuItemsFactory]; menuGrid.DataSource = menuFactory.GetMenuDataTable(); menuGrid.DataBind(); OrderFactory orderFactory = (OrderFactory)Session[Constants.OrderFactory]; orderGrid.DataSource = orderFactory.GetOrderDataTable(); orderGrid.DataBind(); orderItemGrid.DataSource = orderFactory.GetOrderItemDataTable(); orderItemGrid.DataBind(); }