Interface vs Base Class (.Net)

Interface is similar to a base class, it is also very different.

They are similar..

– Both provide structure to another class that uses them

– Both can be used for polymorphism
Interfaces are different than base classes ..

– A class can inherit only one base class, but it can implement many interfaces. (Very important)

– A base class can contain implementation, an interface cannot contain implementation

– Interfaces can only contain Methods, Properties, Indexers, and Events. They cannot contain fields or constants (which are used for implementation)

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