This document provides an overview of classes and objects in C#, covering key concepts like constructors, inheritance, access modifiers, abstract classes, static classes, sealed classes, and partial classes. It compares classes to objects, discusses how constructors are used to create objects, and explains features like encapsulation, inheritance, and polymorphism that C# supports for object-oriented programming. The summary reiterates that C# provides everything needed for OOP and additionally discusses static classes, sealed classes, and partial classes.

1. C# : Classes and Objects
new World();
By:- Rahul Sahay
Email:-rahulsahay19@gmail.com

2. Overview
• Classes versus Objects
• Constructors
• Inheritance
• Access modifiers
• Abstract classes
• Static classes
• Sealed classes
• Partial classes

3. Classes are to Objects as …

4. Constructors

5. Reference Types

6. Object Oriented Programming

7. Inheritance

8. Access Modifiers

9. Abstract

10. Virtual

11. Static

12. Sealed

13. Partial classes

14. Summary
• C# gives you everything you need for OOP
• Encapsulation
• Inheritance
• Polymorphism
• Additional features for performance,
convenience, extensibility
• Static classes
• Sealed classes
• Partial classes