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小能豆

What are the correct version numbers for C#?

c#

What are the correct version numbers for C#? What came out when? Why can’t I find any answers about C# 3.5?

This question is primarily to aid those who are searching for an answer using an incorrect version number, e.g. C# 3.5. The hope is that anyone failing to find an answer with the wrong version number will find this question and then search again with the right version number.


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2023-12-25

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小能豆

C# versions are closely tied to the .NET Framework and Visual Studio releases. Here’s a breakdown of major C# versions along with their corresponding .NET Framework and Visual Studio releases:

  1. C# 1.0:
  2. Released with .NET Framework 1.0.
  3. Visual Studio .NET 2002.
  4. C# 1.2:
  5. A minor update introduced with .NET Framework 1.1.
  6. Visual Studio .NET 2003.
  7. C# 2.0:
  8. Released with .NET Framework 2.0.
  9. Visual Studio 2005.
  10. Notable features: Generics, nullable types, iterators, anonymous methods, and partial classes.
  11. C# 3.0:
  12. Released with .NET Framework 3.0.
  13. Visual Studio 2008.
  14. Notable features: LINQ (Language Integrated Query), anonymous types, extension methods, and implicit typing (var).
  15. C# 4.0:
  16. Released with .NET Framework 4.0.
  17. Visual Studio 2010.
  18. Notable features: Dynamic types, optional parameters, and named arguments.
  19. C# 5.0:
  20. Released with .NET Framework 4.5.
  21. Visual Studio 2012.
  22. Notable features: Async and await keywords for asynchronous programming.
  23. C# 6.0:
  24. Released with .NET Core 1.0 and .NET Framework 4.6.
  25. Visual Studio 2015.
  26. Notable features: Primary constructor, using static, and string interpolation.
  27. C# 7.0:
  28. Released with .NET Core 2.0 and .NET Framework 4.7.
  29. Visual Studio 2017.
  30. Notable features: Tuples, pattern matching, out variables, local functions, and more.
  31. C# 7.1:
  32. Released with .NET Core 2.0.
  33. Visual Studio 2017.
  34. Minor update with features like tuple projection initializers and default literals.
  35. C# 7.2:
    • Released with .NET Core 2.1.
    • Visual Studio 2017.
    • Features include reference semantics with value types, non-trailing named arguments, and more.
  36. C# 7.3:
    • Released with .NET Core 2.1.
    • Visual Studio 2017.
    • Features include tuple equality, tuple comparison, and more.
  37. C# 8.0:
    • Released with .NET Core 3.0.
    • Visual Studio 2019.
    • Notable features: Nullable reference types, asynchronous streams, ranges and indices, default interface methods, and more.

It’s worth noting that C# versions are often associated with the corresponding .NET runtime versions, and the .NET Core and .NET 5/6/7/… unification brings a more streamlined versioning approach. If you are using a specific version of Visual Studio, it usually supports multiple versions of the C# language.

2023-12-25