TimelineC# 14
C# 14
Extension Members & Boilerplate Reduction
Introduced first-class Extension Members, backing field access via 'field', and expanded partial type support.
November 2025
.NET 10.0
Visual Studio 2026
Mads Torgersen
Historical Context
Shipped alongside .NET 10 (LTS) to modernize everyday C# patterns, drastically expanding extension capabilities and reducing property boilerplate.