[How Do I:] Use the ASP.NET AJAX ValidatorCallout Extender?
by Joe Stagner
The standard ASP.NET validation controls work on both the server and the client. Server-side validation adds to the security of your Web application, while client-side validation adds to the user friendliness of your Web application. This video demonstrates how the ValidatorCallout control from the ASP.NET AJAX Control Toolkit extends the standard validation controls to enhance the user experience by neatly positioning validation messages in callout boxes.