Protected vs Internal in C# | Access Modifiers Explained | Part 2 #coding #programming #ai #csharp

Today, we learned about Protected and Internal Access Modifiers in C#.

Access Modifiers help control the visibility and accessibility of class members, making your code more secure and maintainable.

📌 Protected

Accessible within the same class.
Accessible in derived (child) classes.
Cannot be accessed directly through an object outside the class hierarchy.

📌 Internal

Accessible anywhere within the same assembly/project.
Cannot be accessed from another assembly unless explicitly allowed.

💡 Key Difference:

Protected focuses on inheritance.
Internal focuses on project-level accessibility.

Understanding these modifiers helps you write better object-oriented code and implement proper access control in your applications.

The concept is explained in this video. The complete example code is available below for better understanding.

💻 Example Code
using System;

class Parent
{
protected string Message = "Hello from Parent";
}

class Child : Parent
{
public void ShowMessage()
{
Console.WriteLine(Message); // Accessible because it's Protected
}
}

internal class Student
{
public void Display()
{
Console.WriteLine("Accessible within the same assembly");
}
}

class Program
{
static void Main()
{
Child child = new Child();
child.ShowMessage();

Student student = new Student();
student.Display();
}
}
🎯 Key Takeaway

✅ Protected = Same Class + Child Classes
✅ Internal = Same Project/Assembly

📌 Pinned Comment
protected string Message;
internal int StudentId;

Protected → Inheritance Access
Internal → Project-Level Access
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