ECMA-334: Introduction

Microsoft .NET Framework, ASP.NET, Visual C# (CSharp, C Sharp, C-Sharp) Developer Training, Visual Studio

This International Standard is based on a submission from Hewlett-Packard, Intel, and Microsoft, that described a language called C#, which was developed within Microsoft. The principal inventors of this language were Anders Hejlsberg, Scott Wiltamuth, and Peter Golde. The first widely distributed implementation of C# was released by Microsoft in July 2000, as part of its .NET Framework initiative.

Ecma Technical Committee 39 (TC39) Task Group 2 (TG2) was formed in September 2000, to produce a standard for C#. Another Task Group, TG3, was also formed at that time to produce a standard for a library and execution environment called Common Language Infrastructure (CLI). (CLI is based on a subset of the .NET Framework.) Although Microsoft’s implementation of C# relies on CLI for library and runtime support, other implementations of C# need not, provided they support an alternate way of getting at the minimum CLI features required by this C# standard (see Annex D).

As the definition of C# evolved, the goals used in its design were as follows:

• C# is intended to be a simple, modern, general-purpose, object-oriented programming language.

• The language, and implementations thereof, should provide support for software engineering principles

such as strong type checking, array bounds checking, detection of attempts to use uninitialized variables, and automatic garbage collection. Software robustness, durability, and programmer productivity are important.

• The language is intended for use in developing software components suitable for deployment in

distributed environments.

• Source code portability is very important, as is programmer portability, especially for those

programmers already familiar with C and C++.

• Support for internationalization is very important.

• C# is intended to be suitable for writing applications for both hosted and embedded systems, ranging

from the very large that use sophisticated operating systems, down to the very small having dedicated functions.

• Although C# applications are intended to be economical with regard to memory and processing power

requirements, the language was not intended to compete directly on performance and size with C or assembly language.

The following companies and organizations have participated in the development of this standard, and their contributions are gratefully acknowledged: ActiveState, Borland, CSK Corp., Hewlett-Packard, IBM, Intel, IT University of Copenhagen, Jaggersoft (UK), Microsoft, Mountain View Compiler, Monash University (AUS), Netscape, Novell, Pixo, Plum Hall, Sun, and the University of Canterbury (NZ).

The development of this version of the standard started in January 2003