在 blazor 中添加全局使用指令

Question

The type or namespace name 'XXX' does not exist in the namespace 'MyClassLibrary.Models' (are you missing an assembly reference?). The error refer to this BlazorProject\MyPager.azor.g.cs

I got this error after this scenario:

1. Created a file of type .cs inside my "Blazor project" and I added all my global directives by using keyword global inside this file.
2. Changed some namespaces in my "Class library"

Structure of the project:

1. Blazor-serve-side project using the class library
2. Class library.

When I go the page, I can't see any error, the error just in VS, I tried to clean the solution, rebuild, closing VS and reopen but it doesn't solve the problem. I am using VS22 and.Net6.

Note I have also in my blazor project _Imports.razor file

Answer 1

@MisterMagoo, Thanks a lot. what you said works fine, plus that I have to repeat the same namespaces with global directive file and also in _Imports.razor file, so the soultion:

• In GlobalUsings.cs :

   global using Microsoft.AspNetCore.Components; global using Microsoft.AspNetCore.Components.Forms;

• In _Imports.razor if you need the same namespaces in your razor pages, then you have to repeat them.

   using Microsoft.AspNetCore.Components; using Microsoft.AspNetCore.Components.Forms;

Answer 2

Keep in mind that the scope of "global using" isn't truly global. It's the current compilation, which typically means the current project ( not the current solution ). If you want to use this feature in two different projects in your solution (a Blazor Server project and a Class Library in your case, for example) you will need to create "global using" statements in both projects.