Windows Presentation Foundation Data Binding

Windows Presentation Foundation (formerly Avalon) introduces a profound new way to develop user interfaces for rich clients. For the first time, WPF separates design of the user interface from the code. This separation means that, much like ASP.NET, your markup is typically in one file, and the code is in another. This separation exists only at compile time, however. The markup file is used to generate code that is married to the code file, to produce your application