Must use the @namespace for components in MVC app

[nitrospaz]

Description

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If you are adding razor or Blazor components to a MVC app the components must use the @namespace reference in the @code section. Otherwise, the program can't find the component.

This is not referenced or explained in any of the examples.

This is a screenshot of how the component code should look with the @namespace reference.

Page URL

https://learn.microsoft.com/en-us/aspnet/core/blazor/components/integration?view=aspnetcore-8.0#component-namespaces

Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/blazor/components/integration.md

Document ID

d7e39bbc-cd54-92aa-4997-f9dd39dd6ef3

Article author

@guardrex

[github-actions]

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[guardrex]

Hello @nitrospaz ... It's dependent upon the app ... on where the dev places the components. Component namespaces are determined by their location in the app, which we cover at ...

https://learn.microsoft.com/en-us/aspnet/core/blazor/components/?view=aspnetcore-8.0#component-name-class-name-and-namespace

If the component is placed in a Components folder, you shouldn't need to state its namespace that way. If you're seeing that happen tho, we'd need to look into it and possibly have a product unit bug investigation.

There's also a section at the end that touches on adding an @using statement to view imports to help views find them.

I don't think I need to add more content at this time, but I'll keep an 👂 open for more trouble.

... and BTW ... if you do use the @namespace directive to assign a namespace, we recommend that they go at the top of the file.

[nitrospaz]

Thanks for the prompt reply. I moved the @namespace to the top. I have a Components folder in my project root directory and the component is in that folder. If I don't put anything at the top of the component I get errors from the other references to the namespace. I tried putting the @using statement at the top of the component and it gives me the CS0234 "namespace does not exist...". If I put the @namespace at the top the errors go away and it will build.