OOP: Classes & Objects

🔷 C# Programming Lesson 8 Intermediate

C# is a strictly object-oriented language. In this lesson, we will look at classes, instances, constructors, and modern C# Properties.

1 Auto-Implemented Properties ({ get; set; })

In C#, rather than writing verbose getter and setter methods, you can use **Auto-Implemented Properties**. The compiler automatically generates the private backing fields, getters, and setters for you behind the scenes, making your code significantly cleaner:

public string Name { get; set; } // Shorthand property

2 Classes Code

Let's run a program declaring classes, constructor chaining, and shorthand properties:

C# — Classes and Objects ▶ Run Code

using System;

class Car {
    // Auto-implemented properties
    public string Model { get; set; }
    public int Year { get; set; }

    // Constructor
    public Car(string model, int year) {
        Model = model;
        Year = year;
    }

    // Chained constructor using 'this'
    public Car(string model) : this(model, 2026) {}

    public void ShowInfo() {
        Console.WriteLine($"Model: {Model}, Year: {Year}");
    }
}

class Program {
    static void Main() {
        Car car1 = new Car("Ford Mustang", 2022);
        Car car2 = new Car("Tesla Model Y");

        car1.ShowInfo();
        car2.ShowInfo();
    }
}

3 Code Challenge

Challenge: Create a class called `Student` with properties `Name` (string) and `Gpa` (double). Implement a constructor. Instantiate a student, assign values, and print their details.