您还可以设置一个全局静态类，该类包含一个事件，该事件在属性更改时触发，并以所需的形式处理该事件.

You could also set up a global static class that contains an event that fires when a property is changedand handle that event in the desired form.

IMO，如果您希望基于子项中的某些内容进行父项更改，则应在子项中引发一个事件并在该事件中传递更改的信息.

IMO, if you want to have the parent change based on something in the child, you should raise an event in the child and pass the changed information in that event.