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| − | [[Category:OOP]] | + | [[Category:IAM Classes]] |
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| − | ==Interfaces==
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| − | Interfaces - implements or derives from
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| − | An interface is a class that lacks implementation. The only thing it contains are definitions of events, indexers, methods and/or properties. The reason interfaces only provide definitions is because they are inherited by classes and structs, which must provide an implementation for each interface member defined. Since classes in c# can only be derived from one other class ( in c++ it is possible to derive from many) interfaces are used for multiple inheritance. Like abstract classes you cannot create an instance of an interface on derive from it.
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| − | /infod/jeff/classSource/class5/interface.cs -source
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| − | /infod/jeff/classSource/class5/interface2.cs -source
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| − | Phone interface example
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| − | phoneIFace.cs -source
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| − | Multiple interface inheritance - inherits IPhone, Cell, POTS
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| − | /infod/jeff/classSource/class5/phoneIFacePOTS.cs -source
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| − | [http://ia300218.us.archive.org/2/items/arsdigitac04n04/Lecture_04.html ArsDigita University Course 04: Object-oriented Program Design and Software Engineering - Lecture Notes 4]
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| − | [http://ia300107.us.archive.org/1/items/arsdigitac04n05/Lecture_05.html ArsDigita University Course 04: Object-oriented Program Design and Software Engineering - Lecture Notes 5]
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