Step 1: Customize events in the master page (Layout -> Manage Raised Events)
事件是属于某一个母版的,如果一个母版定义了一些事件,那么使用了这个母版的页面就拥有了这些事件
Step 2: Set in the master page under what circumstances will these events be triggered
Step 3: In the page that uses the master, set the action that will be executed when the event is triggered.
同一个事件,不同页面之间触发的动作互不影响。