Explicit and Implicit Interface Implementation

A class that implements an interface can explicitly implement a member of that interface. When a member is explicitly implemented, it cannot be accessed through a class instance, but only through an instance of the interface.

Explicit interface implementation also allows the programmer to inherit two interfaces that share the same member names and give each interface member a separate implementation.


http://msdn.microsoft.com/en-us/library/aa288461(VS.71).aspx