The Microsoft Windows Presentation Foundation (formerly code-named "Avalon") is a key part of .NET 3.0 and provides the foundation for building applications and high-quality user experiences in Windows Vista. WPF blends together application user interface, documents, and media content, while exploiting the full power of your computer.WPF functionality extends support for Tablet PCs and other forms of input device, and provides a more modern imaging and printing pipeline. It also provides accessibility and UI automation infrastructure, data-driven UI and visualization, and even integration points for weaving the application experience into the Windows shell..