implementing Configuring Dependency Injection for Scoped Services in ASP.NET Core - Throws 'InvalidOperationException'
I'm reviewing some code and I'm trying to configure I'm working through a tutorial and I'm refactoring my project and I've been researching this but I'm optimizing some code but I'm relatively new to this, so bear with me... I'm working with an `InvalidOperationException` when trying to resolve a scoped service in my ASP.NET Core application. My setup involves a simple web API where I'm using dependency injection to manage the lifecycle of my services. I have a service `MyScopedService` registered as scoped, but when I try to inject it into a singleton service `MySingletonService`, I'm getting the following behavior: ``` InvalidOperationException: want to consume scoped service 'MyScopedService' from singleton 'MySingletonService'. ``` Here’s how I registered my services in `Startup.cs`: ```csharp public void ConfigureServices(IServiceCollection services) { services.AddScoped<MyScopedService>(); services.AddSingleton<MySingletonService>(); services.AddControllers(); } ``` And in `MySingletonService`, I'm trying to inject `MyScopedService` like this: ```csharp public class MySingletonService { private readonly MyScopedService _myScopedService; public MySingletonService(MyScopedService myScopedService) { _myScopedService = myScopedService; } } ``` I understand that scoped services should not be injected into singleton services due to their lifecycle, but I need to access `MyScopedService` within `MySingletonService`. I've looked into potential workarounds, such as using `IServiceProvider` to create a scope, but that feels like it might lead to problems down the line. I tried refactoring my design to make sure that `MySingletonService` does not directly depend on `MyScopedService`, but I'm struggling to find a clean solution. Can anyone suggest a proper way to handle this? Any advice on best practices for structuring dependencies in ASP.NET Core would be appreciated! My development environment is Linux. Has anyone else encountered this? Any suggestions would be helpful. This issue appeared after updating to C# latest. This is happening in both development and production on Ubuntu 22.04. I'd be grateful for any help. This is for a web app running on Ubuntu 22.04. Any advice would be much appreciated. I'm working in a Windows 10 environment. Thanks for your help in advance!