What is interfaces in c# with example:-

This blog we will discuss what is interface and what is the use in c#.

 An interface in c# is a reference type. Actually C# does not support multiple inheritance.  C# provides alternative approach known as interface to support the concept of multiple inheritance.

Limitations of interface:-

1:- All the members of an interface are implicitly public and abstract.

2:-An interface cannot contain     constant fields, constructors and destructors.

3:-Its members cannot be declared static.

4:-An interface can inherit multiple interfaces.

5:- An interface can contain one or more methods, properties, indexers and events

Example;-

interface ISimpleinter

{

    void SampleMethod();

}

class ImplementationClass : ISampleInter

{

    // Explicit interface member implementation:  

    void ISampleInterface.SampleMethod()

    {

        // Method implementation.

    }

    static void Main()

    {

        // Declare an interface instance.

        ISampleInterface obj = new ImplementationClass();

        // Call the member.

        obj.SampleMethod();

    }

}