... CHAPTER ■ TAKING AJAX TO THE NEXT LEVEL elements on the web page When the web page is returned to the browser, the browser displays the list box to the user When the user selects an item in the list ... the JavaScript that provides the functionality of the UI 828-8 CH02.qxd 9/9/07 5:19 PM Page 25 CHAPTER ■ TAKING AJAX TO THE NEXT LEVEL Introducing the ASP.NET AJAX Architecture The ASP.NET AJAX ... Figure 2-5 The ASP NET AJAX architecture 25 828-8 CH02.qxd 26 9/9/07 5:19 PM Page 26 CHAPTER ■ TAKING AJAX TO THE NEXT LEVEL With the ASP.NET 2.0 AJAX Extensions, the process of developing an AJAX...