what is Encapsulation in oops (c# asp.net)

Encapsulation is one of the pillars of Object Oriented Programming: see, for instance, its very Wikipedia page[^].

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Encapsulation is one of the four fundamental OOP concepts. The other three are inheritance, polymorphism, and abstraction.

Encapsulation is the technique of making the fields in a class private and providing access to the fields via public methods. If a field is declared private, it cannot be accessed by anyone outside the class, thereby hiding the fields within the class. For this reason, encapsulation is also referred to as data hiding.

Encapsulation can be described as a protective barrier that prevents the code and data being randomly accessed by other code defined outside the class. Access to the data and code is tightly controlled by an interface.

The main benefit of encapsulation is the ability to modify our implemented code without breaking the code of others who use our code. With this feature Encapsulation gives maintainability, flexibility and extensibility to our code

Encapsulation is the packing of data and functions into a single component. The features of encapsulation are supported using classes. It allows selective hiding of properties and methods in a class by building an impenetrable wall to protect the code from accidental corruption.

Simple Example is private Variables.

using System;

namespace RectangleApplication
{
    class Rectangle
    {
        //member variables
        private double length;
        private double width;
.....

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