Why did my solution to resolve issues I was having with a Microsoft Learn training, work?

Question

I have a desire to learn how to use Microsoft Blazor. I've taken a couple training courses, but they're all the simple apps that add a Counter.razor page. I need to go beyond that simple example app. We have a situation in which we're going to host an ASP.NET Core app on our server. And it must work with Windows Authentication. From my research it appears that Blazor can either work with no authentication, individual authentication (which looks to me like it generates the necessary tables in a SQL database), or use Azure. I wish we would use Azure, but management has dragged their feet on that for a year or two, so I'm not holding my breathe.

I read elsewhere that Blazor can be used within an ASP.NET Core app, so long as the Blazor components are in Razor pages, and the Razor app handles Windows Authentication. So, this seems like the approach I'll have to take. Therefore, I looked for some training on how to do this and found Integrate ASP.NET Core Razor components into ASP.NET Core apps on Microsoft Learn. However, I ran into some problems with the tutorial, but eventually solved them. However, I don't understand why what I did solved it, because it is a departure from what is in the training.

I have decided to use the interactive components with Blazor, because of my need to use Windows Authentication. Not just WebAssembly. In the Add static server-side rendering (static SSR) section it gave a Components/Routes.razor page like this:

However, that failed miserably. I had to change it to this:

Why didn't what was in the training, work? Why did I have to fully qualify the RouteView?

Answer 1

Hi Falanga, Rod, DOH,

The issue you encountered with the RouteView component in the tutorial is likely due to differences in namespace resolution or library versions between your project and the training materials.

In the tutorial, RouteView was referenced without its full namespace, which may work in some cases but not universally, depending on your project's configuration or library versions. In your situation, fully qualifying RouteView as Microsoft.AspNetCore.Components.RouteView resolved the issue. This ensures the correct component is referenced and helps avoid potential namespace conflicts or resolution problems.

Such issues can occur due to variations in project setup, missing using directives, or updates in Blazor and its associated libraries. Using the fully qualified name is a reliable approach to ensure compatibility and proper functionality within your project.

If you continue to face this issue, could you please specify the exact Learn Path, Module name, or Exercise link where you are encountering this error? This information will help us provide more precise assistance.

If you have found the answer provided to be helpful, please click on the "Accept answer/Upvote" button so that it is useful for other members in the Microsoft Q&A community.       

Thank you.