Were you considering adding Windows Contact integration into your application?
If you are thinking about adding any Windows Contact features into your managed application you might want to think again. Currently there is no managed wrapper for the C\C++ API that is currently documented on MSDN.
However, if you wish to read a windows contact file into your application you’re in luck. The .Contact file is an XML document; Microsoft has released the Windows Contact Schema Element Definitions on MSDN for this XML document type.