That may not be the case at all times , so it s safer to make sure the connection is not active at design - time and use live data only as a designing feature , but turn it off before you save or compile the project 虽然情况并非总是如此,但设计时确保连接为非活动的总是更加安全(并且只将实时数据用作设计特性,但在保存或编译项目之前,要将之关闭) 。