C Sharp
C Sharp
C Sharp (often written as C#) is a general-purpose, multi-paradigm programming language developed by Microsoft as part of its .NET initiative. It was designed by Anders Hejlsberg and first released in 2000. C# is known for its strong typing, component-oriented design, and support for object-oriented, functional, and imperative programming styles. It is one of the primary languages used for developing Windows applications, web services, and games (via Unity).
History
C# was first announced at the 2000 Professional Developers Conference (PDC) as a language targeting the .NET Framework. Its design was influenced by C++, Java, and Delphi. The language underwent several revisions: C# 2.0 introduced generics and nullable value types; C# 3.0 added Language Integrated Query (LINQ); C# 4.0 brought dynamic binding; C# 5.0 introduced async/await patterns; and later versions (C# 6.0 and beyond) have continued to add features such as pattern matching, nullable reference types, and records. The language is standardized by ECMA (ECMA-334) and ISO (ISO/IEC 23270).
Features
C# provides a comprehensive set of features including:
- Automatic garbage collection and memory management
- Type safety and strong type inference
- Properties, events, and delegates
- Language Integrated Query (LINQ) for data manipulation
- Asynchronous programming support via the async/await keywords
- Pattern matching and switch expressions
- Nullable value types (int?, bool?) and nullable reference types (C# 8.0+)
- Records and positional records (C# 9.0, 10.0) for immutable data
- Interoperability with native code through P/Invoke and COM
C# is commonly used with the .NET Framework and .NET Core (now unified as .NET 5+). It also runs on other platforms via Mono and Xamarin.
Usage
C# is widely employed in enterprise software, web applications (ASP.NET), desktop applications (Windows Forms, WPF), mobile applications (Xamarin), and game development (Unity). It is also used in cloud services (Azure Functions) and backend services with ASP.NET Core.