Asp.Net Page Life Cycle Some Important OOps Points 1.APIE (Abstraction, Polymorphism, Inheritance and Encapsulation). 2. Abstraction: Abstraction means show only what is necessary. 3. Encapsulation: It is a process of hiding all the complex processing from the outside world and make’s your objects simple. 4. Inheritance:This concept helps to define parent child relationship between classes. 5. Polymorphism:It’s a property of object to act differently under different conditions. For instance a simple user object depending on conditions can act like a admin or like data entry object.