C# 14 is the latest version of the C# programming language, released with .NET 10. This version includes several new features and improvements to make your code more expressive, safer, and performant.
- Collection Expressions - Simplified syntax for creating and initializing collections
- Primary Constructors Enhancements - Extended support for primary constructors
- Inline Arrays - Stack-allocated fixed-size arrays
- Lambda Expression Improvements - Default parameters and natural types
- Ref Readonly Parameters - Pass parameters by reference without allowing modification
- Default Lambda Parameters - Default values for lambda parameters
- Alias Any Type - Use
usingaliases for any type - Experimental Attribute - Mark APIs as experimental