What do you mean by encapsulation?

Encapsulation is one of the fundamental principles of object-oriented programming (OOP).
It means wrapping data (variables) and methods (functions) together into a single unit (class) and restricting direct access to some of the object’s data.

In simple terms, encapsulation protects data and allows it to be accessed only through controlled ways.

Key points of Encapsulation

• Data is hidden from outside access

• Access is provided using public methods

• Internal details are protected using access modifiers

• Improves security and maintainability

Example in C#

class Employee
{
    private int salary;   // data hiding

    public void SetSalary(int value)
    {
        salary = value;
    }

    public int GetSalary()
    {
        return salary;
    }
}

Here:

• salary is private (cannot be accessed directly)

• Access is controlled using SetSalary() and GetSalary()

Why Encapsulation is important

• Protects sensitive data

• Prevents accidental modification

• Makes code easier to maintain

• Improves flexibility and reusability

Real-life example

Think of an ATM machine:

• You don’t access cash directly

• You use buttons (methods) to withdraw money

• Internal process is hidden (data protection)

Short definition (Interview-ready)

Encapsulation is the process of binding data and methods together into a single unit and hiding internal implementation details from the outside world.

Encapsulation is a way to restrict the direct access to some components of an object, so users cannot access state values for all of the variables of a particular object. Encapsulation can be used to hide both data members and data functions or methods associated with an instantiated class or object.

As we know OOPs, Provide 4 principles. They are:-

1. Encapsulation
2. Inheritance
3. Polymorphism
4. Abstraction

Encapsulation :- To make our application extensibility and reusability and Simplicity .

The process of binding the data and functions together into a single unit (i.e. class) is called Encapsulation. In simple words, we can say that it is a process of defining a class by hiding its internal data members from outside the class and accessing those internal data members only through publicly exposed methods or properties. Data encapsulation is also called data hiding because by using this principle we can hide the internal data from outside the class.

One of the real-world examples of encapsulation is Capsule, as the capsule binds all its medicinal materials within it, similarly in C# encapsulation units(class, interface, enums , structs, etc.) encloses all its data member and member functions within it.

class EncapsulationExample
{
    public int Id { get; set; }
    public String Name { get; set; }

    public String GetNameWithId()
    {
        return Name + "_" + Id;
    }
}

Here the class EncapsulationExample is an example of Encapsulation. The variables ( Id , Name) and methods(GetNameWithId) of the class are bound in a single unit which is the EncapsulationExample class.

Encapsulation is, a protective shield that prevents the data from being accessed by the code outside this shield. 
In simple way, Encapsulation is defined as the wrapping up of data under a single unit.

Encapsulation is a technique used for hiding the properties and behaviors of an object and allowing outside access only as appropriate. It prevents other objects from directly altering or accessing the properties or methods of the encapsulated object.

Encapsulation refers to the bundling of data with the methods that operate on that data. Often that definition is misconstrued to mean that the data is somehow hidden. In .NET, you can have encapsulated data that is not hidden at all.

However, hiding data is not the full extent of information hiding. David Parnas first introduced the concept of information hiding around 1972. He argued that the primary criteria for system modularization should concern the hiding of critical design decisions. He stressed hiding "difficult design decisions or design decisions which are likely to change." Hiding information in that manner isolates clients from requiring intimate knowledge of the design to use a module, and from the effects of changing those decisions.

Encapsulation is the ability of an object to be a container (or capsule) for related properties (ie. data variables) and methods (ie. functions). Older languages did not enforce any property/method relationships. This often resulted in side effects where variables had their contents changed or reused in unexpected ways and spaghetti code that was difficult to unravel, understand and maintain. Encapsulation is one of three fundamental principles in object oriented programming.

Encapsulation is defined as the wrapping up of data under a single unit. It is the mechanism that binds together code and the data it manipulates. In a different way, encapsulation is a protective shield that prevents the data from being accessed by the code outside this shield.

example: Private methods, private variables, etc 

Encapsulation, in the context of C#, refers to an object's ability to hide data and behavior that are not necessary to its user. Encapsulation enables a group of properties, methods and other members to be considered a single unit or object.

The following are the benefits of encapsulation:

• Protection of data from accidental corruption
• Specification of the accessibility of each of the members of a class to the code outside the class
• Flexibility and extensibility of the code and reduction in complexity
• Lower coupling between objects and hence improvement in code maintainability

Encapsulation is used to restrict access to the members of a class so as to prevent the user of a given class from manipulating objects in ways that are not intended by the designer. While encapsulation hides the internal implementation of the functionalities of class without affecting the overall functioning of the system, it allows the class to service a request for functionality and add or modify its internal structure (data or methods) to suit changing requirements.

Encapsulation is also known as information hiding.

https://www.techtarget.com/searchnetworking/definition/encapsulation

Check the below links

https://www.c-sharpcorner.com/article/encapsulation-in-C-Sharp/
https://www.tutorialspoint.com/csharp/csharp_encapsulation.htm

Check this link. I hope it helps you in understanding.

https://www.c-sharpcorner.com/blogs/understanding-encapsulation-and-abstraction

Encapsulation is one which is used to wrap up into a single block. In a real-world example, consider a measure of your mobile phone, whatever you are unable to see inside a telephone may be IC, Wire and many more, they are called Encapsulation. 

Encapsulation is a process of binding the data members and member functions into a single unit. In c#, the class is the real-time example for encapsulation because it will combine various types of data members and member functions into a single unit.

idea of bundling data and methods that work on that data within one unit, like a class in Java. This concept is also often used to hide the internal representation, or state of an object from the outside. This is called information

Encapsulation is defined as the wrapping up of data under a single unit. It is the mechanism that binds together code and the data it manipulates. Differently, encapsulation is a protective shield that prevents the data from being accessed by the code outside this shield.

Technically, in encapsulation, the variables or data of a class are hidden from any other class and can be accessed only through any member function of the own class in which they are declared.
As in encapsulation, the data in a class is hidden from other classes, so it is also known as data-hiding.
Encapsulation can be achieved by: Declaring all the variables in the class as private and using C# Properties in the class to set and get the values of variables.

https://www.geeksforgeeks.org/c-sharp-encapsulation/