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Interface in C#

If the interface in C# only contains the declaration of the methods and we need to define those methods in the class, then Why we use the interface..???
Asked by: dimplesharma | Member Since Oct-2010 | Asked on: Oct 14th, 2010

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TheOutlander

Answered On : Jan 2nd, 2011

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Interfaces define a contract. You should use it only if you want to support a group or related functionalities in a class or struct. Otherwise there is no need to use it.

Think about cars - they have similar functionality. That is something you'd want to define in an interface so that it is generic.

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