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Inheritance Concepts in C# - How to Program in C#?

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Published on Aug 26, 2011

This Video Inheritance Concepts in C#

Is recorded by Mr. Sandeep Soni,MCT

In this video we have covered the following topics:
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Agenda

1. Introduction to Inheritance
2. Constructors & Inheritance
3. Type casting of Reference Types
4. Static and dynamic binding
5. Abstract classes

Overview

Inheritance depends upon “is a” relationship.
For example:
 Car is a Vehicle
 Faculty is a Person
 Student is a Person
 Chair is a Furniture

Static and Dynamic Binding

Virtual methods are dynamically bound i.e., the actual method called would be decided at runtime and the decision
is based on the object to which the reference variable invoking the method is referring to.


Abstract Classes and Methods

1. An abstract method is a method in which declaration is provided but implementation is not.
2. A class with one or more methods declared as abstract must be declared as abstract and such a class cannot be instantiated because its behavior is incomplete.


System.Object Class

Every class in .NET is inherited from System.Object class. Thus the functionality in Object class is available to all the
objects in .NET. Also the reference variable of type System.Object can refer to instance/object of any class in .NET
Methods in Object class:
1. bool Equals(object obj) // Compares the current object reference with obj and returns true if both are referring to the same object otherwise returns false.
2. System.Type GetType() //returns the Type instance for the current objects class.

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