An Interface in C#

Introduction

Interface contains the method declarations. It can be implemented by more than one class. Multiple interfaces can be implemented by a single class.

Method of a sub class overrides the method of an interface

Output

If the method of an interface is not overridden, then the following error comes.

Error Message

Multiple interfaces can be implemented by a single class

Output

Multiple Class can implement  the same interface and can use it, according to their requirement

Output

Interface cannot contain the definition of a method.

Error Message

Conclusion

Interface can be used in C# for multiple inheritance. This particular point will b covered in my next article.

Happy Coding!