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What Is Class?

Topic Name Introduction to C# Environment Setup C# Keywords Contextual Keywords C# Namespaces What Is Class? What is Object? Data Types Nullable Types C# Variables What are Access Modifiers? What is Property? What is Indexer? Hello world Program What is Type conversion? What is if else condition? What is Array? What is Jagged Array? What is ArrayList? What is List? What is string and StringBuilder? What is for loop? What is foreach loop? What is switch? What is Method? What is method overloading? What is Constructor? What is constructor overloading? What is Boxing and Unboxing? What is delegate in C# and uses of delegates? What is Inheritance? What are Value types and Reference types? What is Exception Handling? What is struct? What is Dictionary? What is Hashtable? What is interface? What is Abstraction? What is Polymorphism? What is Enums? What is Sealed Class? What is Partial Class? Extension Methods? What is static? What is Encapsulation? Difference between Equality Operator (==) and Equals() Method in C# ? What is IEnumerable? What is Serializing? What is LINQ? Differences between IEnumerable and IQueryable? What is Multithreading? What is File Handling? What is late binding and early binding? What is Singleton Design Patterns?
1/7/2020 4:20:07 AM

A class is like a blueprint of specific object. In the real world, every object has some color, shape and functionalities. For example, the luxury car Ferrari. Ferrari is an object of the luxury car type. The luxury car is a class that specify certain characteristic like speed, color, shape, interior etc. So any company that makes a car that meet those requirements is an object of the luxury car type. For example, every single car of BMW, lamborghini, cadillac are an object of the class called 'Luxury Car'. Here, 'Luxury Car' is a class and every single physical car is an object of the luxury car class. Likewise, in object-oriented programming, a class defines certain properties, fields, events, method etc. A class defines the kinds of data and the functionality their objects will have. A class enables you to create your own custom types by grouping together variables of other types, methods and events. In C#, a class can be defined by using the class keyword.

Note : Every class must contain a won constructor, same name of the class.

Every Thing is class, C# Has Two type of class’s

  • User Defined
  • Pre Defined

String is also a class, it’s Pre Defined class.

Ex: User Defined :

Pre Defined :

We can see string is also Class. It is Sealed class.

C# is based on the C and C++ programming language. Hence, the C# programming language has in-built support for classes and objects. A class is nothing but an encapsulation of properties and methods that are used to represent a real-time entity.

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