Introduction of .NET Framework

This section provides a quick introduction of the .NET Framework, which was first released in 2002. The .NET Framework provides virtual machine on Windows system to run applications written in different languages.

.NET Framework is a software framework developed by Microsoft that runs on Windows systems to provide the CLR (Common Language Runtime) virtual machine where applications written in different languages can be executed. .NET Framework also provides a large library of software codes to help applications in area of user interface, data access, database connectivity, cryptography, web application development, numeric algorithms, and network communications.

The first version of .NET Framework was released in Feb. 2002. The current version is .NET 4.5 which was released in Feb. 2012.

Main features of .NET Framework as documented on

The picture below provides an overview of the Common Language Infrastructure (CLI) of the .NET Framework:
Microsoft .NET Framework

Last update: 2012.

Table of Contents

 About This Book

 1957 - FORTRAN Language Developed by IBM

 1970 - UNIX Operating System Developed by AT&T Bell Labs

 1971 - FTP Protocol Created by Abhay Bhushan

 1972 - C Language Developed by Dennis Ritchie

 1976 - vi Text Editor Developed by Bill Joy

 1977 - Apple II Designed by Steve Jobs and Steve Wozniak

 1977 - The Bourne Shell Developed by Stephen Bourne

 1978 - The C Shell Developed by Bill Joy

 1978 - Bash (Bourne-Again Shell) Developed by Brian Fox

 1979 - The Tcsh (TENEX C Shell) Developed by Ken Greer

 1983 - "Sendmail" Mail Transfer Agent Developed by Eric Allman

 1984 - Macintosh Developed by Apple Inc.

 1984 - X Window System Developed a MIT Team

 1991 - WWW (World Wide Web) Developed by Tim Berners-Lee

 1991 - Gopher Protocol Created by a University of Minnesota Team

 1995 - Java Language Developed by Sun Microsystems

 1995 - PHP: Hypertext Preprocessor Created by Rasmus Lerdorf

2002 - .NET Framework Developed by Microsoft

Introduction of .NET Framework

 HelloCLR.cs - Sample Application in C#

 HelloCLR.vb - Sample Application in VB


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