This document introduces C#, including that it is a modern, general-purpose, object-oriented language used widely for professional development. It discusses namespaces as collections of code elements used to organize code, and specifies the main method is the entry point for applications.

1. C# class INTRODUCTION

2. In this session we will learn
• Introduction of C#
• Reasons make C# a widely used professional language
• What is Namespace?
• Namespace Declaration
• Purpose of Main method

3. What is C#?
• C# is a simple, modern, general-purpose, object-oriented programming language
• Reasons make C# a widely used professional language –
• It is a modern, general-purpose programming language
• It is object oriented.
• It is component oriented.
• It is easy to learn.
• It is a structured language.
• It produces efficient programs.
• It can be compiled on a variety of computer platforms.
• It is a part of .NET Framework.

4. What is Namespace?
• A namespace is used to organize your code and is a collection of classes, interfaces, structs,
Enums and delegates.
• Namespace Declaration:
• The namespace declaration. using System, indicates that you are using The System namespace.
Example:
//Namespace Declaration
using System;

5. Purpose of Main method
• Main method is the entry point into your application.
//Namespace Declaration
using System;
namespace Introduction
{
class Program
{
static void Main(string[]args)
{
//C# Tutorial - Introduction
//Write toconsole
Console.WriteLine("Welcome toC#Training!");
Main1();
}
static void Main1()
{
Console.WriteLine("Welcome toC#Training 1!");
}
}
}