Using IServiceProvider in ASP.NET Core: A Guide to Dependency Injection
This article explains the IServiceProvider interface in ASP.NET Core, a core component for dependency injection (DI). It details how to use it for accessing service instances within ASP.NET Core applications, contrasting it with constructor injection. The piece covers object lifetimes (transient, scoped, singleton), shows how to register and consume services, and explains how to create scopes for services outside of HTTP requests. Best practices for using IServiceProvider are also included, such as favoring constructor injection when possible and the use of GetRequiredService() over GetService().
