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.NET / C# / Windows Instructions for GitHub Copilot

1 instruction for .NET / C# / Windows

.NET Copilot Instructions: Nullable Contracts, Async and Endpoints

Copilot instructions for .NET: Nullable Contracts, Async and Endpoints. Structure, data, errors, security, performance, and tests. .NET 10 LTS and .NET 11, Nov 2026.

# .NET Copilot Instructions: Nullable Contracts, Async and Endpoints ## Install Install the native export at `.github/instructions/dotnet.instructions.md`. Copy that export, not this catalog file. Catalog fields such as `tools` and `author` are for presets.dev. Install one skill file per name. Cursor, GitHub Copilot, Codex, Antigravity CLI, and Devin can all read `.agents/skills`, so a second copy with the same name collides. <!-- native:start --> # .NET Copilot Instructions: Nullable Contracts, Async and Endpoints Path-specific Copilot instructions for .NET. They apply through `applyTo` and leave `.github/copilot-instructions.md` in place. ## Updated for .NET 10 LTS and .NET 11, Nov 2026 Do not upgrade dependencies or the framework version unless the task asks. .NET 11 includes C# ...