说明：  In this book, Adam and Joel focus on providing a beyond-the-basics drill down of the inner workings and extensibility of the ASP.NET AJAX framework by covering the programming patterns established by the script framework, the architecture, and the techniques to create AJAX-enabled server controls. They also cover advanced but still relevant topics such as localization and error handling. By providing a conceptual guide to understanding and extending the framework, this book is sure to serve any application or component developer who is looking to unlock the true potential of ASP.NET AJAX.include the book Source Code.