Modern C# and .NET Tutorial: Cross-Platform Basics/

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Talking About OOP

Learn about object-oriented programming concepts: composition, aggregation, inheritance, abstraction, and polymorphism.

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Concepts of OOP
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An object in the real world is a thing, such as a car or a person, whereas an object in programming often represents something in the real world, such as a product or bank account, but it can also be more abstract.

In C#, we use the class and record (mostly) or struct (sometimes) C# keywords to define a type of object. We will learn about the difference between classes and structs later. We can think of a type as a blueprint or template for an object.

Concepts of OOP

The concepts of OOP are briefly described here:

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Introduction

Hello, C#! Welcome, .NET!

Speaking C#

Controlling Flow, Converting Types, and Handling Exception

Writing, Debugging, and Testing Functions

Building Your Own Types with Object-Oriented Programming

Implementing Interfaces and Inheriting Classes

Packaging and Distributing .NET Types

Working with Common .NET Types

Working with Files, Streams, and Serialization

Working with Data Using Entity Framework Core

Querying and Manipulating Data Using LINQ

Introducing Web Development Using ASP.NET Core

Building Websites Using ASP.NET Core Razor Pages

Building Websites Using the Model-View-Controller Pattern

Building and Consuming Web Services

Building User Interfaces Using Blazor

Conclusion

Talking About OOP

Concepts of OOP