Why do .NET 10 / C# 14 extension members only work in Visual Studio 2026?
Summary The issue of C# 14 extension members not working in JetBrains Rider or Visual Studio 2022, despite the same .NET 10 SDK being installed, is due to incomplete IDE support for the new language features. This results in the code compiling and working correctly only in Visual Studio 2026. Root Cause The root cause … Read more