Interfaces in C#

What is Interface?

An interface looks like a class, but has no implementation. The only thing it contains are declarations of events, indexers, methods and/or properties. The reason interfaces only provide declarations is because they are inherited by structs and classes, that must provide an implementation for each interface member declared.

Why Interface come in C#?

    public class Father

    {

       

    }

    public class Mother

    {

    }

    public class Son : Father,Mother

    {

          //C# doesn’t support multiple inheritances.

    }

Implicit Interface:

interface Father

    {

        void Display();

    }

    interface Mother

    {

        void DisplayMember();

    }

    public class Son : Father, Mother

    {

        void Display()

        {

           //Implemnt Interface

        }

        void DisplayMember()

        {

            ///Implemnt Interface

        }

    }

Explicit Interface:

interface Father

    {

        void Display();

    }

    interface Mother

    {

        void Display();

    }

    public class Son : Father, Mother

    {

        void Mother.Display()

        {

            //Implemnt Interface

        }

        void Father.Display()

        {

            //Implemnt Interface

        }

     

    }

Note: 1) Interface all method should be public by default.

      2) Interface don’t have constructor.