ARDrone.Net is a project mainly written in ..., it's free.
The first thing to do is download the SDK from the Parrot development site - this will require that you install the DirectX library and the SDL library.
http://ardrone.parrot.com/parrot-ar-drone/dev/developers
To compile this solution you must update the three path variables contained in the ArDroneProperties.props file.
<WinSDKDir></WinSDKDir>
<SDLDir></SDLDir>
<DXSDKDir></DXSDKDir>
These should point to the respective folders on your harddrive.
Once you have set these the solution should compile.