Thread: Abstract course or Interfaces in C#

I am last year computer science student. Yesterday our sir teach OOPs concept. I understand most of the concept very well but I am little bit confused between abstract class and interface. I want to know Difference between Abstract classes and Interfaces in C#. If you are having any suggestions then reply me. It can helpful to me.

Abstract class

• We can have concrete methods and abstract methods

• We can give implementation for concrete methods.

• An abstract class is a class that cannot be instantiated but that can contain code.

Interfaces

• We could not have concrete methods. All the methods are abstract methods implicitly.

• And those methods allows only public access specified only. It won’t allow any final static keywords with methods.

• An interface only contains method definitions but does not contain any code. With an interface, you need to implement all the methods defined in the interface.