DOTNET C# PROGRAMMING INTRODUCTION TUTORIAL INTRODUCTION K MANOHAR GOUD

K MANOHAR GOUD

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DOTNET C# PROGRAMMING INTRODUCTION TUTORIAL 

C# (CSHARP) is intended to be a simple, modern, general-purpose, object-oriented programming language. Its development team is led by Anders Hejlsberg. The most recent version is C# 5.0, which was released on August 15, 2012.

Design Goals of c# (CSHARP)

• The C# language 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.

C# has the following syntax:

• Semicolons are used to denote the end of a statement.
• Curly braces are used to group statements. Statements are commonly grouped into methods (functions), methods into classes, and classes into namespaces.
• Variables are assigned using an equals sign, but compared using two consecutive equals signs.
• Square brackets are used with arrays, both to declare them and to get a value at a given index in one of them.

Summary of versions

	C# 2.0	C# 3.0	C# 4.0	C# 5.0	Future
Features added	Generics Partial types Anonymous methods Iterators Nullable types Private setters (properties) Method group conversions (delegates)	Implicitly typed local variables Object and collection initializers Auto-Implemented properties Anonymous types Extension methods Query expressions Lambda expressions Expression trees Partial Methods	Dynamic binding Named and optional arguments Generic co- and contravariance Embedded interop types ("NoPIA")	Asynchronous methods Caller info attributes	Compiler-as-a-service("Roslyn") Community technology preview as of September 2012