Dotnet Design Pattern Review

The dotnet-design-pattern-review skill analyzes C#/.NET code to evaluate whether it correctly implements six key design patterns (Command, Factory, Dependency Injection, Repository, Provider, and Resource patterns) and provides improvement recommendations across architecture, SOLID principles, performance, security, and code quality. It is designed for .NET developers and architects who want to ensure their codebase follows established design patterns and best practices without making any actual code modifications. The skill addresses the problem of inconsistent pattern implementation and architectural drift by providing structured reviews against a comprehensive checklist covering design patterns, .NET conventions, GoF patterns, SOLID principles, and clean code standards.

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skills.sh installs: 11.7K
GitHub stars: 41K
last updated: Aug 21, 2026

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Install

$ npx -y skills add github/awesome-copilot --skill dotnet-design-pattern-review --agent claude-code

Installs into .claude/skills of the current project.

Files

.NET/C# Design Pattern Review

Review the C#/.NET code in ${selection} for design pattern implementation and suggest improvements for the solution/project. Do not make any changes to the code, just provide a review.

Required Design Patterns

Command Pattern: Generic base classes (CommandHandler<TOptions>), ICommandHandler<TOptions> interface, CommandHandlerOptions inheritance, static SetupCommand(IHost host) methods
Factory Pattern: Complex object creation service provider integration
Dependency Injection: Primary constructor syntax, ArgumentNullException null checks, interface abstractions, proper service lifetimes
Repository Pattern: Async data access interfaces provider abstractions for connections
Provider Pattern: External service abstractions (database, AI), clear contracts, configuration handling
Resource Pattern: ResourceManager for localized messages, separate .resx files (LogMessages, ErrorMessages)