What is encapsulation and how does it promote data hiding in C#?

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Aryan Kumar · Answer

Sure. In C#, encapsulation is a principle of object-oriented programming that binds together the data and the functions that operate on that data, and keeps both safe from outside interference. This means that the data and the functions that operate on it are kept together in a single unit, known as a class.

Encapsulation is achieved using access modifiers. Access modifiers are keywords that are used to control the visibility of class members. There are four access modifiers in C#:

Public: Public members are accessible from anywhere in the program.
Protected: Protected members are accessible from within the class and from derived classes.
Internal: Internal members are accessible from within the assembly.
Private: Private members are only accessible from within the class.

By using access modifiers, you can control which members of a class are accessible to other classes. This can be used to promote data hiding, which is the principle of keeping data safe from outside interference.

For example, the following code defines a class Person with a private field name and a public property FullName that gets and sets the value of the name field.

C#

class Person
{
    private string name;

    public string FullName
    {
        get { return name; }
        set { name = value; }
    }
}

The name field is private, which means that it is only accessible from within the Person class. The FullName property is public, which means that it is accessible from anywhere in the program.

This means that the value of the name field can only be changed by code that is inside the Person class. This promotes data hiding because it prevents other classes from changing the value of the name field without the permission of the Person class.

Encapsulation is a powerful feature that can be used to improve the security and readability of your code. It can also be used to promote code reuse by hiding the implementation details of a class from other classes.

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What is encapsulation and how does it promote data hiding in C#?

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