what is the use of interfaces..??

Question

what is the use of interface...???

Santhosh Kumar · Answer

First and foremost interfaces in C# are a means to get around the lack of multiple inheritance in C# meaning you cannot inherit from multiple classes but you can implement multiple interfaces. OOP tries to resemble how objects are defined in the real life and interfaces are a very logical way of grouping objects in terms of behavior. An interface is a contract between itself and any class that implements it. This contract states that any class that implements the interface will implement the interface's properties methods and/or events. An interface contains no implementation only the signatures of the functionality the interface provides. An interface can contain signatures of methods properties indexers & events. You can think of an interface as an abstract class with the implementation stripped out. An interface doesn't actually do anything like a class or abstract class it merely defines what a class that implements it will do. An interface can also inherit/implement other interfaces.

Bikesh Srivastava · Answer

sontosh kumar is correct.

Ramesh S · Answer

Interfaces are useful when you cannot use class inheritance .

Nitin Sontakke · Answer

Answer to following forum question might also be helpful to you! http://www.c-sharpcorner.com/forums/when-should-you-use-an-interface http://www.c-sharpcorner.com/forums/real-world-scenario-for-using-interfaces-in-c-sharp http://www.c-sharpcorner.com/forums/why-access-modifier-is-not-use-in-interface-in-c-sharp