README.md

Csharp Feature Examples

Examples of C# programming, with the goal of tracking and staying up-to-date with the latest versions of the language. These examples provide a comprehensive overview of the features and capabilities of C# and serve as a valuable resource for anyone looking to learn or improve their skills in this programming language.

Note: Continuous improvements and bug fixes are made within the repository to produce better solutions.

Version History

• C# 13 is supported on .NET 9 (September, 2024)

  • Params Collections
  • New Escape Sequence
  • Extension Types
  • The lock statement
  • API Improvements
    • New LINQ Methods
      • Index()
      • CountBy()
      • AggregateBy()

• C# 12 is supported on .NET 8 (November, 2023)

  • Primary constructors
  • Default values for parameters in lambda expressions

• C# 11 is supported on .NET 7 (November, 2022)

  • Raw string literals
  • List Patterns Matching
  • Generic Attributes
  • File-local types
  • Static Abstract Members In Interfaces
  • User-defined explicit and implicit conversion operators

• C# 10 is supported on .NET 6 (November, 2021)

  • Global using directive

• C# 9 is supported on .NET 5 (November, 2020)

  • Target-typed new expressions
  • Pattern matching
  • Record types
  • Top-level statements
  • Source generator
  • Attributes on local functions

• C# 8 is supported on .NET Standard 2.1, .NET Core 3.0-3.1 (September 2019)

  • Asynchronous streams
  • Null-Coalescing operator
  • Default interface methods
  • Static local functions
  • Pattern matching

• C# 7.1-2-3 is supported on .NET Framework 4.6-4.8, .NET Core 2.1-2.2 (May, 2018)

  • Attributes on local functions
  • Local functions
  • Pattern matching
  • Tuple types
  • Numeric literal syntax improvement
  • Immutable collections
  • in parameter modifier
  • ArrayPool
  • MemoryPool

• C# 6 is supported on .NET Framework 4.6, .NET Core 1.0-1.1 (July, 2015)

  • Using static directive
  • Collection initializers

• C# 4 & others

  • Dynamic types
  • Multicast Delegates
  • DebuggerDisplay

Notes

• Which C# version is included in which framework version?
• C# Language Features MindMap
• .NET release cadence
• Upgrade Assistant
• .NET Source Browser