Object Oriented Programming means writing programming which are OBJECT oriented or organized around objects rather than action and logic.

Why Object Oriented Programming (OOPS)?

We already had procedural programming so why OOPS. As we know that procedural programming is about writing procedures or methods(function) that perform operations on the data, while object-oriented programming is about creating objects that contain both data and methods. So to avaoid repetition of code OOPs come in picture.

OOP helps to keep the C# code DRY - "Don't Repeat Yourself" which is about reducing the repetition of code. You should extract out the codes that are common for the application, and place them at a single place and reuse them instead of repeating it.

OOP makes it possible to create full reusable applications with less code and shorter development time.

OOP provides a clear structure for the programs to make code faster and easier to execute.

Summary

To summarise, OOP allows decomposition of a problem into a number of entities called objects and then builds data and functions around these objects. Hope you picked up a thing or two.

Cheers!