ASP.NET 4 Unleashed

Understanding and Handling Control Events

The majority of ASP.NET controls support one or more events. For example, the ASP.NET Button control supports the Click event. The Click event is raised on the server after you click the button rendered by the Button control in the browser.

The page in Listing 1.6 illustrates how you can write code that executes when a user clicks the button rendered by the Button control (in other words, it illustrates how you can create a Click event handler):

Listing 1.6. ShowButtonClick.aspx

Notice that the Button control in Listing 1.6 includes an OnClick attribute. This attribute points to a subroutine named btnSubmit_Click() ...