What is Data Encapsulation?

Data encapsulation is a fundamental concept in Object-Oriented Programming (OOP) that combines a cohesive set of properties, functions, and other members into a unified entity. A class serves as a prime illustration of data encapsulation, exemplifying the concept in practice. It is occasionally denoted as data hiding, as it restricts user access to the inner workings and implementation details. By encapsulating data within an object, the integrity and reliability of the contained information are assured, promoting robustness and data security.

What is encapsulation?

Data Encapsulation in C# vb.net asp.net

The primary objective of data encapsulation is to shield the intricate implementation details of a class from users. This objective is accomplished by using the state, represented by private fields, and the behaviors, encompassed by public methods, of the class. By encapsulating data within private fields and exposing only the necessary functionalities through public methods, users are insulated from the inner workings of the class. This encapsulation maintains a clear separation between the implementation and the usage, promoting better code organization, maintainability, and abstraction.

public class Student { private string studentName; //Retrieve name public string Getname() { return studentName; } // Set name public void Setname(string inName) { studentName = inName; } } pub;ic static void Main() { string sName ="Jack"; Student obj = new Student(); obj.Setname(sName); System.Console.WriteLine("Name :" + obj.Getname()); }
Object oriented programming data encapsulation

In the given example, the Getname() and Setname() methods are utilized to retrieve and modify the student name. The studentName variable, designated as private, cannot be accessed directly by the user. Instead, the Getname() and Setname() methods are employed to interact with this variable. As a result, users are shielded from the underlying implementation details. This exemplifies the accomplishment of data encapsulation through the utilization of private fields (state) and public methods (behaviors) within an object. By concealing the private fields and their implementation from external classes, data encapsulation ensures that only the desired data can be accessed through public methods, thereby justifying the term "data hiding."

Data encapsulation is effectively implemented through the use of access specifiers, commonly known as access modifiers, which define the scope and visibility of class members. In C#, there are five types of modifiers employed in encapsulating data, enabling developers to control the accessibility and exposure of class members.

  1. Public
  2. Private
  3. Protected
  4. Internal
  5. Protected internal

You can see here more details about... . Access Specifiers