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dependency-injection-patterns

Organize ASP.NET Core dependency injection registrations into composable extension methods.

Updated Dec 4, 2022
Search Tags:#dependency injection#asp.net core#service collection#ioc container#extension methods#program.cs
One-click install
npx skills add https://github.com/devingoble/CloudOStat --skill dependency-injection-patterns-devingoble
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: dependency-injection-patterns
Source: https://github.com/devingoble/CloudOStat/tree/main/.github/skills/microsoft-extensions-dependency-injection
Command: npx skills add https://github.com/devingoble/CloudOStat --skill dependency-injection-patterns-devingoble

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the issue of unmanageable Program.cs or Startup.cs files in ASP.NET Core applications by providing a structured approach to organizing dependency injection registrations.

Core Features & Use Cases

  • Modular Registrations: Group related service registrations into reusable extension methods (e.g., AddUserServices()).
  • Improved Readability: Keeps Program.cs clean and focused on application composition.
  • Enhanced Reusability: Facilitates sharing DI configurations between production code and tests.
  • Use Case: Refactor a large Program.cs file with hundreds of individual services.AddScoped<...>() calls into a set of well-defined extension methods, making the codebase easier to navigate and maintain.

Quick Start

Organize your ASP.NET Core dependency injection registrations using extension methods by creating a UserServiceCollectionExtensions.cs file.

Frequently Asked Questions about dependency-injection-patterns

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I organize dependency injection registrations in ASP.NET Core?▼

Organize ASP.NET Core dependency injection registrations by grouping related services into reusable extension methods on IServiceCollection, such as AddUserServices(). This approach keeps your Program.cs file clean and modular.

What is the best way to clean up a large Program.cs file with many service registrations?▼

The best way to clean up a large Program.cs file is to refactor individual services.AddScoped calls into well-defined extension methods. This makes your dependency injection configurations composable, reusable, and easier to maintain.

Does this approach support advanced dependency injection patterns like factory-based registration?▼

Yes, this dependency injection organization approach supports advanced patterns including factory-based registration, conditional registration, and keyed services for .NET 8+ applications using the IServiceCollection.

Can I share dependency injection configurations between production code and tests?▼

You can share dependency injection configurations between production code and tests by extracting related service registrations into reusable extension methods. This enhances reusability across different environments.

When should I use extension methods for my IoC container setup?▼

Use extension methods for your IoC container setup when your ASP.NET Core application's Program.cs becomes unmanageable. Grouping related services into composable Add* methods facilitates modularity and maintainability.

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