将路由事件标记为“已处理”和“类处理”。

Marking Routed Events as Handled, and Class Handling.

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一个方案是获取事件的参数并将该事件标记为已处理。

One scenario is to take the arguments of the event and mark the event as handled.

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您可以实现具有将事件标记为已处理的行为的类处理程序。

You can implement a class handler that has the behavior of marking the event as handled.

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And last year to did we hand students Google maps, Google news, asked them to mash those two very familiar real world products together so that they had a map of the United States, little markers sprinkled throughout, that indicated exactly where there were current events going on.

去年我们给学生提供了谷歌地图和谷歌新闻，要求他们把这两个熟悉的实时世界,产品结合到一起，这样他们就有了一个美国地图,上面到处都是一些小图标，它们能够精确地标记出,当前事件发生的地方。

哈佛公开课 - 计算机科学课程节选