C# Language Specification
Versions 1.2 and 2.0 of the C# Language Specifications are the authoritative source for C# grammar and syntax. They contain detailed information on all aspects of the language, including many points not covered in the Visual C# product documentation.
The 1.2 specification discusses features that were added to the language prior to Visual C# 2005 and the 2.0 specification discusses features that were added for Visual C# 2005.
The C# Language Specifications are available in Microsoft Word format from the following locations:
On MSDN online at https://msdn.microsoft.com/vcsharp/programming/language/default.aspx
In Visual Studio, in the VC#\Specifications\1033\ directory under your Microsoft Visual Studio 2005 installation directory.
If you do not have Microsoft Word installed on your computer, you can view, copy, and print the Word version of the specification with the free Word Viewer 2003.
The C# Language Specification is also available as a book published by Addison Wesley.