microsoft-extensions-dependency-injection
Dependency Injection Patterns
When to Use This Skill
Use this skill when:
- Organizing service registrations in ASP.NET Core applications
- Avoiding massive Program.cs/Startup.cs files with hundreds of registrations
- Making service configuration reusable between production and tests
- Designing libraries that integrate with Microsoft.Extensions.DependencyInjection
The Problem
Without organization, Program.cs becomes unmanageable:
// BAD: 200+ lines of unorganized registrations
var builder = WebApplication.CreateBuilder(args);
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