dotnet

What I do

• Enforce Clean Architecture layer boundaries and dependency direction
• Apply C# coding standards with async safety and nullable correctness
• Guide Entity Framework Core configuration and query optimization

When to use me

Use this when working on .NET/C# projects that follow Clean Architecture patterns.

Key Rules

• Dependency direction: Domain → Application → Infrastructure → WebAPI (inner layers must never reference outer)
• ALWAYS pass CancellationToken through async methods — no exceptions
• Enable <Nullable>enable</Nullable> in all .csproj files; use string? for nullable, string.Empty for non-nullable defaults
• Constructor injection only — never use property or field injection
• Use IEntityTypeConfiguration<T> for all EF entity configs; never configure in OnModelCreating directly
• Use AsNoTracking() for all read-only queries; project to DTOs with .Select() early
• Use record types for DTOs, not classes
• Apply sealed to classes that should not be inherited
• Use required keyword (C# 11+) for required properties instead of constructor enforcement
• Prefer is not null over != null; use nameof() in exception parameter names
• Interfaces belong in the Application layer; implementations in Infrastructure
• Use a verify-fix-verify loop: run the validation commands below, fix any failures, and rerun until all checks pass

Validation Commands

dotnet restore
dotnet build
dotnet format
dotnet test

See references/clean-architecture-examples.md for worked examples.