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Q: 

Where and why do we use an interface ? c#

Possible Duplicate:
.net Interface explanation

Where and why do we use an interface ?, c#

+1  A: 

Introducing yourself to design patterns should help.

In 2 words - when we need to abstract a type's contract from its implementation.

Vitaly  2010-09-27 18:05:38
That's a few more than two.
Malfist  2010-09-27 18:35:10

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