Difference between abstract class and interface in C#

                                            

An abstract class is a half-defined base class and the interface is the contract between 2 parties(caller and callee). abstract is used to share something common in parent-child relations.

Abstract Class 

• it is half defined base class
• we can not create an instance to the abstract class
• we are using abstract keyword

Interface  Uses

• It is a contract between caller and callee(2 parties)
• we are not using abstract keyword