I want real time scenario when we are using abstract class and interface
This is not a question.
Please read the posting guidelines and then reply with more information.
Such as:
What version of .NET you're using.
What language you are using (C#? VB.NET?)
Is this in a windows app or web app?
What do you mean "real-time" (real life?)
What are you using so far for abstract and interface?
This seems like it would be better suited to reading a tutorial on abstract classes