Specifies the DISPID of a property on a data-bound control that is to be bound to a data-source control.

指定要与数据源控件绑定的数据绑定控件的属性的DISPID。

Notifiers are a great way of coupling parts of a system that are interested in state changes but do not want to be bound to one another.

事件通知是一种很好的方法，可用来将对系统中各部分状态变化感兴趣但是又不想限制在一起的各部分分开。