In this video I  build, from scratch, a CascadingDropDown sample application using Visual Basic.NET.

Learn how to:

  • enhance ASP.NET’s standard DropDownList with the CascadingDropDown control extender from the “Atlas” Control Toolkit;
  • allow for partial-page updates using the UpdatePanel control; and
  • request data from a simple XML Web Service.

The completed CascadingDropDown sample application demonstrates two fundamental benefits of AJAX-enabled web applications, namely web service integration and asynchronous page updates.