C# helloworld 0001

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HelloWorld
{
class Program
{
static void Main(string[] args)
{
/* my first program in C# */
Console.Write("Hello World");
Console.ReadKey();
}
}
}

output:Hello World

Note:

Following are some of the components of the .Net framework:

Common Language Runtime

The .Net Framework Class Library

Common Language Specification

Common Type System

Metadata and Assemblies

Windows Forms

ASP.Net and ASP.Net AJAX

ADO.Net

Windows Workflow Foundation (WF)

Windows Presentation Foundation

Windows Communication Foundation (WCF)

LINQ