𝗧𝗵𝗲 𝗖# 𝗰𝗵𝗲𝗮𝘁 𝘀𝗵𝗲𝗲𝘁 𝘁𝗵𝗮𝘁 𝗰𝗼𝘃𝗲𝗿𝘀 𝟮𝟱 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘃𝗼𝗹𝘂𝘁𝗶𝗼𝗻
From C# 1.0 to C# 15. Everything you need in one place 👇
Most .NET developers miss the latest features and are writing code like using C# 6 or 8.
And some developers miss the foundation that makes C# powerful.
Understanding C#'s evolution means recognizing the patterns that will help you write better code and advance your career.
Here's what each major version brought:
𝗖# 𝟭.𝟬 (𝟮𝟬𝟬𝟬) - 𝗧𝗵𝗲 𝗙𝗼𝘂𝗻𝗱𝗮𝘁𝗶𝗼𝗻
✓ Classes, Structs, Interfaces
✓ Events, Properties, Delegates
✓ Operators, Statements, Attributes
✓ Enums, Indexers, Namespaces, Exceptions
𝗖# 𝟮.𝟬 (𝟮𝟬𝟬𝟱) - 𝗧𝗵𝗲 𝗚𝗲𝗻𝗲𝗿𝗶𝗰𝘀 𝗥𝗲𝘃𝗼𝗹𝘂𝘁𝗶𝗼𝗻
✓ Generics
✓ Partial Types
✓ Anonymous Methods
✓ Nullable Value Types
✓ Iterators (yield)
✓ Static Classes, Delegate Inference
✓ Covariance and Contravariance
✓ Accessor Accessibility
𝗖# 𝟯.𝟬 (𝟮𝟬𝟬𝟳) - 𝗟𝗜𝗡𝗤 & 𝗟𝗮𝗺𝗯𝗱𝗮𝘀
✓ Auto-Implemented Properties
✓ Anonymous Types
✓ Query Expressions (LINQ)
✓ Lambda Expressions, Expression Trees
✓ Extension Methods
✓ Implicitly Typed Variables (var)
✓ Partial Methods
✓ Object and Collection Initializers
𝗖# 𝟰.𝟬 (𝟮𝟬𝟭𝟬) - 𝗗𝘆𝗻𝗮𝗺𝗶𝗰 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴
✓ dynamic
✓ Named and Optional Arguments
✓ Generic Covariance and Contravariance
✓ Embedded Interop Types
𝗖# 𝟱.𝟬 (𝟮𝟬𝟭𝟮) - 𝗔𝘀𝘆𝗻𝗰 𝗥𝗲𝘃𝗼𝗹𝘂𝘁𝗶𝗼𝗻
✓ async / await
✓ Caller Info Attributes
𝗖# 𝟲.𝟬 (𝟮𝟬𝟭𝟱) - 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝘃𝗶𝘁𝘆
✓ nameof
✓ Null-conditional access
✓ Exception filters
✓ String interpolation
✓ Expression-bodied members
✓ using static imports
✓ Auto-property initializers
𝗖# 𝟳.𝟬 (𝟮𝟬𝟭𝟳) - 𝗣𝗮𝘁𝘁𝗲𝗿𝗻 𝗠𝗮𝘁𝗰𝗵𝗶𝗻𝗴
✓ Tuples, Deconstruction
✓ Pattern Matching
✓ ValueTask
✓ ref return, ref struct, ref readonly
✓ private protected
✓ Local Functions, out variables
✓ Digit separators, Binary literals
𝗖# 𝟴.𝟬 (𝟮𝟬𝟭𝟵) - 𝗠𝗼𝗿𝗲 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀
✓ Nullable Reference Types
✓ Async Streams
✓ Index and Range operators
✓ Switch expressions
✓ Default interface members
✓ Using Statement
✓ Null-coalescing assignment
✓ Static local functions, IAsyncDisposable
𝗖# 𝟵.𝟬 (𝟮𝟬𝟮𝟬) - 𝗥𝗲𝗰𝗼𝗿𝗱𝘀 & 𝗜𝗻𝗶𝘁
✓ Records, with expressions
✓ Init-only setters
✓ Top Level Statements
✓ Target-typed new
✓ Pattern Matching v2
✓ Covariant return types
𝗖# 𝟭𝟬.𝟬 (𝟮𝟬𝟮𝟭) - 𝗦𝗶𝗺𝗽𝗹𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻
✓ Global using directives
✓ File-scoped namespace
✓ Record structs
✓ Interpolated-string handlers
✓ Constant interpolated strings
✓ Extended property patterns
✓ CallerArgumentExpression
𝗖# 𝟭𝟭.𝟬 (𝟮𝟬𝟮𝟮) - 𝗦𝘁𝗿𝗶𝗻𝗴𝘀 & 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀
✓ Raw-string literals
✓ List patterns
✓ required members
✓ Static abstract interface members
✓ Generic attributes
✓ Auto-default structs
✓ UTF-8 string literals
✓ File-local types
𝗖# 𝟭𝟮.𝟬 (𝟮𝟬𝟮𝟯) - 𝗣𝗿𝗶𝗺𝗮𝗿𝘆 𝗖𝗼𝗻𝘀𝘁𝗿𝘂𝗰𝘁𝗼𝗿𝘀
✓ Primary constructors
✓ Collection expressions
✓ Inline arrays
✓ Aliases
✓ Default lambda parameters
𝗖# 𝟭𝟯.𝟬 (𝟮𝟬𝟮𝟰) - 𝗣𝗮𝗿𝗮𝗺𝘀 & 𝗣𝗮𝗿𝘁𝗶𝗮𝗹𝘀
✓ params collections
✓ New Lock object
✓ Partial properties and indexers
✓ Overload resolution priority
✓ New escape sequence
✓ Task.WhenEach
𝗖# 𝟭𝟰.𝟬 (𝟮𝟬𝟮𝟱) - 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 & 𝗦𝗮𝗳𝗲𝘁𝘆
✓ field keyword
✓ Extensions
✓ Null-conditional assignment
𝗖# 𝟭𝟱.𝟬 (𝟮𝟬𝟮𝟲) - 𝗟𝗮𝘁𝗲𝘀𝘁 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀
✓ Collection expression arguments
Want the complete breakdown with examples and deep-dive resources for each version?
I've created a comprehensive C# roadmap with high-quality materials for every feature:
↳
antondevtips.com/roadmap/csh…
——
♻️ Repost to help others understand C# evolution
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