csharp-12-dotnet-8-ai-kit

To use C# 12 primary constructors and collection expressions in a .NET 8 project, apply correct syntax and semantics that align with the November 2023 LTS baseline. This ensures your modern C# 12 constructs compile successfully on the locked target version.

To ensure generated code is compatible with .NET 8 runtime behaviors, select APIs and runtime features that match the .NET 8 baseline. Verify repo-declared target indicators like global.json or .csproj files to prevent incompatible API usage and build failures.

.NET 10 code does not work in a project locked to C# 12 and .NET 8. You must avoid .NET 10-specific features and syntax to enforce compatibility constraints, switching to the appropriate .NET 10 skill if your repository targets the newer framework.

The best way to avoid mismatched syntax and build failures in C# 12 is to enforce strict compatibility constraints against the .NET 8 baseline. This prevents incorrect guidance when a codebase is locked, ensuring all APIs and constructs align with the target versions.

You need to switch from .NET 8 guidance to a newer framework target when your project no longer uses the November 2023 LTS baseline. If the repository targets .NET 10, switch to the appropriate companion skill to receive correct version-specific API recommendations.