Introduction

This article will discuss about objects in programming.Watch our 500 videos on Azure, WCF, WPF, LINQ, Design Patterns, WWF, Silverlight, UML @ http://www.questpond.com

What is an object?

• An object is a software bundle of variables and related methods.
• Objects are related to real life scenario
• Class is the general thing and object is the specialization of general thing
• Objects are instance of classes.
• Declaration of an Object in C#.NET
• ClassName objectName=new ClassName();
• E.g.: Person objPerson= new Person();

An object is characterized by concepts like:

• Attribute
• Behavior
• Identity

1. What is an Attribute?

• Attributes define the characteristics of a class.
• The set of values of an attribute of a particular object is called its state.
• In Class Program attribute can be a string or it can be a integer

Example of Attribute:

2. What is a Behavior?

• Every object has behavior
• In C#, behaviors of objects are written in methods.
• If a behavior of an object needs to be performed, then the corresponding method is called.

Example of Behavior:

3. What is an Identity?

• Each time an object is created the object identity is been defined.
• This identity is usually created using an identifier which is derived from the type of item

Example of Identity:

The source code is attached at the top of this article.