We??™ll look one such example, which comes with the full-source version
of the ASP.NET AJAX Control Toolkit available for download at http://ajax.asp.net.
After you load the solution into Visual Studio, under the SampleWebSite project,
locate the CascadingDropDown folder with an .aspx and .asmx page. Set CascadingDrop-
Down.aspx as the start page, and then run the application (Ctrl+F5). You are presented
with three drop-down controls asking you to enter the make, model, and color of a car.
With each selection, the values of the subsequent drop-down control change, and the
complete specs of the car are displayed (see Figure 7-12).
CHAPTER 7 ?– USING THE ASP.NET AJAX CONTROL TOOLKIT (PART 1) 150
Figure 7-12. Selecting a car using CascadingDropDown controls
Let??™s examine the markup for this page:
CascadingDropDown Demonstration