The Windows® API Code Pack for Microsoft® .NET Framework provides a source code library that can be used to access new Windows 7 features (and some related Windows Vista features) from managed code. These features are not available to developers today in the .NET Framework.
The features included in this version (v0.85) of the library are:

  • Support for Windows Shell namespace objects, including the new Windows 7 libraries, Known Folders and non file system containers.
  • Windows Vista and Windows 7 Task Dialogs.
  • Windows 7 Explorer Browser Control supporting both WPF and Windows Forms.
  • Support for Shell property system.
  • Helpers for Windows 7 Taskbar Jumplists, Icon Overlay and Progress bar.
  • Support for Windows Vista and Windows 7 common file dialogs, including custom file dialog controls.
  • Support for Direct3D 11.0 and DXGI 1.0/1.1 APIs.
  • Sensor Platform APIs
  • Extended Linguistic Services APIs

Find more information on MSDN Code Gallery Here