Classes

using System;

class Person
{
    // Properties
    public string Name { get; set; }
    public int Age { get; set; }

    // Constructor
    public Person(string name, int age)
    {
        Name = name;
        Age = age;
    }

    // Method to display information
    public void DisplayInfo()
    {
        Console.WriteLine($"Name: {Name}, Age: {Age}");
    }
}

class Program
{
    static void Main(string[] args)
    {
        // Creating an instance of the Person class
        Person person = new Person("John", 25);
        person.DisplayInfo();
    }
}

Properties

• Properties provide controlled access to fields.

• Equivalent to getter/setter methods.

class Player {
    public int Health { get; set; }
}

set  / get

• Tutorial and examples of simplified Set/Get usage: ChristianHur video

• Without access control for Set and Get:

public String car;

• Simplified:

  public String car {get; private set;}
  

  • Using { set; get; }  creates an automatic property . This means the compiler automatically generates a private field to store the value, without needing to explicitly declare it in the class.

  • Equivalent to doing:

    private String _car; // Manually generated private field
    
    public String car
    {
        get { return _car; }
        set { _car = value; }
    }
    

• Normal:

  public String car {
      get {
          return car;
      }
      private set {
          car = value;
      }
  }
  

Boxing / Unboxing

• Boxing converts a value type into an object.

• This allocates memory on the heap.

• Boxing causes GC pressure, which is problematic in hot loops.

• Boxing:

  int a = 5;
  object b = a; // boxing
  

• Unboxing:

  int c = (int)b;