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dotnet-design-pattern-review

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by github · part of github/awesome-copilot

Comprehensive C#/.NET design pattern analysis with actionable improvement recommendations. Evaluates six core patterns: Command, Factory, Dependency Injection, Repository, Provider, and Resource patterns against GoF and SOLID principles Analyzes architecture compliance including namespace conventions, project separation, async/await patterns, and structured logging implementation Reviews code quality across security, testability, maintainability, and performance dimensions with specific...

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🧩 One of 7 skills in the github/awesome-copilot package — works on its own, and pairs well with its siblings.

Comprehensive C#/.NET design pattern analysis with actionable improvement recommendations. Evaluates six core patterns: Command, Factory, Dependency Injection, Repository, Provider, and Resource patterns against GoF and SOLID principles Analyzes architecture compliance including namespace conventions, project separation, async/await patterns, and structured logging implementation Reviews code quality across security, testability, maintainability, and performance dimensions with specific...

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by github

Comprehensive C#/.NET design pattern analysis with actionable improvement recommendations. Evaluates six core patterns: Command, Factory, Dependency Injection, Repository, Provider, and Resource patterns against GoF and SOLID principles Analyzes architecture compliance including namespace conventions, project separation, async/await patterns, and structured logging implementation Reviews code quality across security, testability, maintainability, and performance dimensions with specific... npx skills add https://github.com/github/awesome-copilot --skill dotnet-design-pattern-review Download ZIPGitHub36.2k

.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)

Review Checklist

  • Design Patterns: Identify patterns used. Are Command Handler, Factory, Provider, and Repository patterns correctly implemented? Missing beneficial patterns?

  • Architecture: Follow namespace conventions ({Core|Console|App|Service}.{Feature})? Proper separation between Core/Console projects? Modular and readable?

  • .NET Best Practices: Primary constructors, async/await with Task returns, ResourceManager usage, structured logging, strongly-typed configuration?

  • GoF Patterns: Command, Factory, Template Method, Strategy patterns correctly implemented?

  • SOLID Principles: Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion violations?

  • Performance: Proper async/await, resource disposal, ConfigureAwait(false), parallel processing opportunities?

  • Maintainability: Clear separation of concerns, consistent error handling, proper configuration usage?

  • Testability: Dependencies abstracted via interfaces, mockable components, async testability, AAA pattern compatibility?

  • Security: Input validation, secure credential handling, parameterized queries, safe exception handling?

  • Documentation: XML docs for public APIs, parameter/return descriptions, resource file organization?

  • Code Clarity: Meaningful names reflecting domain concepts, clear intent through patterns, self-explanatory structure?

  • Clean Code: Consistent style, appropriate method/class size, minimal complexity, eliminated duplication?

Improvement Focus Areas

  • Command Handlers: Validation in base class, consistent error handling, proper resource management

  • Factories: Dependency configuration, service provider integration, disposal patterns

  • Providers: Connection management, async patterns, exception handling and logging

  • Configuration: Data annotations, validation attributes, secure sensitive value handling

  • AI/ML Integration: Semantic Kernel patterns, structured output handling, model configuration

Provide specific, actionable recommendations for improvements aligned with the project's architecture and .NET best practices.