Creating UI Control Event Handlers
In Chapter 5, you saw how the ASP.NET framework supports a set of application-level events. You can implement specific methods that are called when your web application enters various states. You also saw how page events can be used to achieve a similar effect as an individual page enters different states.
The Web Forms UI controls implement events that work in a similar fashion, but focused on individual controls. All Web Forms UI controls implement the same set of core events, which is then supplemented with events specific to individual control types. The core events are described in Table 14-4.
These events ...