Visual Studio 2022 - implementing Multi-Project Solution Not Recognizing Shared Interfaces
I've been working on this all day and I've been banging my head against this for hours. I've been banging my head against this for hours... I'm experiencing a frustrating scenario where my multi-project solution in Visual Studio 2022 isn't recognizing shared interface implementations across different projects. I have a solution with two projects: `Core` and `App`. The `Core` project contains an interface called `IDataProcessor` and the `App` project is supposed to implement this interface. Here's the interface definition in the `Core` project: ```csharp namespace Core.Interfaces { public interface IDataProcessor { void ProcessData(string data); } } ``` In the `App` project, I'm trying to implement this interface like so: ```csharp using Core.Interfaces; namespace App.Services { public class DataProcessor : IDataProcessor { public void ProcessData(string data) { // Implementation here } } } ``` However, I'm getting the following behavior in the `DataProcessor` class: ``` The type or namespace name 'IDataProcessor' does not exist in the namespace 'Core.Interfaces' (are you missing an assembly reference?) ``` I've checked the project references, and the `App` project has a reference to the `Core` project. I've also tried cleaning and rebuilding the solution, restarting Visual Studio, and ensuring that the `Core` project builds without issues. Additionally, I've confirmed that the `Core` project is targeting the same framework version as the `App` project (.NET 6). I even tried adding an explicit project reference by right-clicking on `References` in the `App` project and selecting `Add Reference`, but the scenario continues. Does anyone have any insights on what might be causing this behavior? Any help would be greatly appreciated! Thanks in advance! Any examples would be super helpful. This is happening in both development and production on Ubuntu 22.04. Has anyone else encountered this?