C# Abstract Classes – What They Are, How to Use Them, and Best Practices

I get asked about abstract classes a lot. What they are, how they work, and why you should know about them. An easy way to think of an abstract class is to say that it fits between a full base class and an interface. Basically, it is a blend of the two. In this video, I am going to demonstrate what an abstract class is, how to use it, and when it makes sense to create an abstract class.

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0:00 – Intro
0:58 – Demo application walk-through
3:19 – Creating a base Class
5:53 – Making the base class abstract
8:44 – “Interface portion” in the abstract class. The blend of interface and base class
12:56 – Class inheritance in an abstract class
16:00 – When to use an abstract class