Classes and Objects

In C#, a class is a blueprint for creating objects. It defines the structure and behavior of the objects that can be created from it.

An object is an instance of a class. It represents a real-world entity and has properties to store data and methods to perform actions.

Let's look at an example:

1// Creating a class called Person
2public class Person
3{
4    // Properties
5    public string Name { get; set; }
6    public int Age { get; set; }
7
8    // Method
9    public void Introduce()
10    {
11        Console.WriteLine("My name is " + Name + " and I am " + Age + " years old.");
12    }
13}
14
15// Creating an instance of the Person class
16Person person = new Person();
17
18// Accessing and setting the properties
19person.Name = "John Doe";
20person.Age = 30;
21
22// Calling the method
23person.Introduce();

In this example, we defined a class called Person with properties Name and Age. We also defined a method called Introduce that prints the person's name and age. We then created an instance of the Person class, set the properties, and called the Introduce method.

Classes and objects are fundamental concepts in object-oriented programming. They allow us to organize and structure our code by representing real-world entities as objects with properties and methods.

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class Program

{

    static void Main(string[] args)

    {

        // Creating an instance of the Person class

        Person person = new Person();

​

        // Accessing and setting the properties

        person.Name = "John Doe";

        person.Age = 30;

​

        // Calling the method

        person.Introduce();

    }

}

​

public class Person

{

    // Properties

    public string Name { get; set; }

    public int Age { get; set; }

​

    // Method

    public void Introduce()

    {

        Console.WriteLine("My name is " + Name + " and I am " + Age + " years old.");

    }

}