Book excerpt: Pro ASP.NET 2.0 Server Controls with ASP.NET AJAX is a reference for the serious ASP.NET developer who understands the benefits of object-oriented development and wants to apply those principles to ASP.NET 2.0, ASP.NET AJAX, and server control development. It will help readers create a powerful suite of interactive controls and enrich the design-time experience when building custom server controls. Coverage explains how to integrate client-side development technologies with server control technology, details the background on user controls, and helps the reader learn how to work with the new mobile controls in ASP.NET 2.0.