Where you used interface in your .net project?

Question

Dear frnds I know about an interface but here I want to know where we used interface in our project.i found in Many website but didn't understand properly.plesse provide example with explain where you people used interface in your project? Please help me on this because many interviewer asked me but not didn't gave the ans in proper way.

Answer 1

Hi Anjali,

 

Interface allows you to achieve multiple class inheritance.. Here are two Interface IA and IB which are inharited with there respective class.

interface IA
    {
        void AMethod();
    }
    interface IB
    {
        void BMethod();
    }
    class A : IA
    {
        public void AMethod()
        {
            Console.WriteLine("A");
        }
    }
    class B : IB
    {
        public void BMethod()
        {
            Console.WriteLine("A");
        }
    }

 Now to achieve multiple class inheritance will need to create master class which AB that class will have object of A & B Class and inherited with both interface

class AB : IA, IB
    {
        A a = new A();
        B b = new B();

        public void AMethod()
        {
            a.AMethod();
        }

        public void BMethod()
        {
            b.BMethod();
        }
    }

 So now AB Class can use method of both class 

public static void Main()
        {
            AB ab = new AB();
            ab.AMethod();
            ab.BMethod();
        }

 

Answer 2

If you want to do Multiple Inherit, then you have to use Interface.

 

http://www.dotnetfunda.com/forums/show/2476/in-live-projectswhere-we-will-use-abstract-class-and-interface-classes

https://www.codeproject.com/Questions/341625/Real-time-example-of-interface

Answer 3

Hi,

You can get better understanding of interface on this link

 

http://www.c-sharpcorner.com/UploadFile/sekarbalag/interface-best-example-in-csharp/

 

https://dzone.com/articles/c-interfaces-what-are-they-and 

Answer 4

http://www.dotnetfunda.com/forums/show/2476/in-live-projectswhere-we-will-use-abstract-class-and-interface-classes

 

 https://www.codeproject.com/Questions/341625/Real-time-example-of-interface

 

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