C# ASP.NET

Class : Class it concrete represent of entity. it represent a group of objects which hold similar attribute and behavior . it provides abstraction and encapsulation.

Objects : It represent a Physical / real entity. an objects is something you can give a name.

Objects Oriented Programming : Objects Oriented Programming is a symbol of Programing that represent a program a system of objects and enables code-reuse.

Function overloading : adding a new method with the same name in same/derived class but with different number/type parameters .it implement polymorphism.

Inheritance : it is a process of acquiring attributes and behaviors from another objects /class

Constructor : a special method always called whenever an instance of the class is created .

Destructor : a special method always called by GC just before object is being reclaimed by GC.