C# Encapsulation Explanation with Example

C# Encapsulation Explanation with Example

Hello everyone, In this article we are going to talk about encapsulation in Object oriented programming. We will make an example in C# and Visual studio.

Lets get started

Firstly, What is Encapsulation ?

Encapsulation is protecting objects or methods in a class from out of this class. Thanks to Encapsulation we prevent the other classes to access the items which we do not want to show. In a class we use necessary modifier word in definition to specify the eccess level and only related class can access to this variables or objects.

We can use below modifier words :

  • Public : This access modifier lets the class to show the variable or function to the other classes. All public objects can be reached from all class.
  • Private : This access modifier set the variable or the method to hide from outside of class. Only the related class can use these items.
  • Protected : This modifier allows a derived class to access a variable or a method which defined in upper class.
  • Internal : This modifier let the class to use a variable or method to be used in the app or package.
  • Protected Internal : This modifier lets the variable or method to be hidden from the accesser. Only child class can access to this variable or method.

Below code block, I created a class named Employee and I have declared all variable types above:

using System;

namespace CSharp_Encapsulation
    class Employee
        public string public_variable = "public";
        private string private_variable = "private";
        protected string protected_variable = "protected";
        internal string internal_variable = "internal";
        protected internal string pro_internal = "pro_internal";

Now I will try to use them from another class, Below image you will see you can not use the private and protected defined variables here :

Private and protected modifiers you can not see here

Below code block you will see the code block to call these variables.

private void Form1_Load(object sender, EventArgs e)
            Employee emp = new Employee();
            emp.internal_variable = " new internal variable value ";
            emp.pro_internal = " new pro variable value ";
            emp.public_variable = "new_public variable value ";

That is all in this article.

Have a good encapsulation

Burak Hamdi TUFAN


Share this Post

Send with Whatsapp

Post a Comment

Success! Your comment sent to post. It will be showed after confirmation.
Error! There was an error sending your comment.


    There is no comment. Be the owner of first comment...