backend-csharp

Setting up dependency injection in an ASP.NET Core WebApi involves defining service and repository interfaces, applying constructor injection, and registering dependencies in the DI container via Program.cs or Startup.cs for clean architecture.

You select transient, scoped, or singleton service lifetimes in .NET based on state sharing requirements, wiring them through DI registration patterns to ensure correct object instantiation across your WebAPI or MVC backend requests.

Yes, C# dependency injection works with both ASP.NET Core WebApi and MVC backends, applying constructor injection and service layering consistently across both project types to maintain testability and reliable architecture patterns.

To implement the repository pattern with a service layer in C#, you define repository interfaces, apply constructor injection in your services, and wire controllers to the service layer to achieve a cleanly separated and testable backend.

The best way to structure a C# backend for unit testing services is using layered architecture with interface contracts, repository interfaces, and constructor injection to isolate dependencies and ensure service layers are fully testable.