When to use Abstract Class in C#?

When to use Abstract Class in C#?

Hello Readers,

Abstract classes has always been the hot topic among developers and interviewers when it comes to checking your OOPs knowledge.

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In my previous post, I have already explained about what are abstract classes and why we cannot create object of an abstract class.  You can refer to the post – Why can’t an object of abstract class be created? In case, you have missed it.
When to use Abstract Class in C#?

Abstract class in c# with example

The above code will run perfectly fine and will produce the output as – “It’s a four-wheeled vehicle with pretty nice balance and speed.”

Now if you try to create an object of abstract class, you get a compile time error as shown below:

abstract classes

For knowing why an object cannot be created of the abstract class refer this post – Why can’t an object of abstract class be created?

You can override the Features() method to provide the derived class implementation:

When to use Abstract Class?

  • It’s needed to provide default behaviors as well as common behaviors that multiple derived classes can share and override.
  • If you want to create multiple versions of your component since versioning is not a problem with abstract class. You can add properties or methods to an abstract class without breaking the code and all inheriting classes are automatically updated with the change.

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