The type or namespace name 'StronglyTypedIdAttribute' could not be found

[AlexZeitler]

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I created a Username struct like this in an ASP.NET Core 6 application:

[StronglyTypedId(idType: typeof(string),
  generateSystemTextJsonConverter: true,
  generateNewtonsoftJsonConverter: true,
  generateSystemComponentModelTypeConverter: true,
  generateMongoDBBsonSerialization: true,
  addCodeGeneratedAttribute: true
)]
public partial struct Username { }

When compiling, I get this error:

Types.cs(31, 2): [CS0246] The type or namespace name 'StronglyTypedIdAttribute' could not be found (are you missing a using directive or an assembly reference?)

I tried adding a using statement like this:

using Meziantou.Framework.StronglyTypedId;

However, this results in

Cannot resolve symbol 'Meziantou'`
Using directive is not required by the code and can be safely removed

My package reference looks like this:

<PackageReference Include="Meziantou.Framework.StronglyTypedId" Version="1.0.22">
        <PrivateAssets>all</PrivateAssets>
        <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>

What am I doing wrong here?

[meziantou]

Can you share repro steps? Does the following work on your machine?

• dotnet new web

• dotnet add package Meziantou.Framework.StronglyTypedId

• Add a new file with the content

  [StronglyTypedId(typeof(int))]
  public partial struct ProjectId { }
  

• dotnet build

Also, which version of the compiler do you use? https://www.meziantou.net/getting-roslyn-csharp-compiler-and-language-versions.htm

[AlexZeitler]

Can you share repro steps? Does the following work on your machine? dotnet new web dotnet add package Meziantou.Framework.StronglyTypedId Add a new file with the content [StronglyTypedId(typeof(int))] public partial struct ProjectId { } dotnet build

The repro fails with the same error.

Also, which version of the compiler do you use? https://www.meziantou.net/getting-roslyn-csharp-compiler-and-language-versions.htm

ProjectId.cs(3, 8): [CS8304] Compiler version: '4.0.1-1.22181.2 (487283bc)'. Language version: 10.0.

I'm using Xubuntu 22.04 with the new dotnet 6 packages provided by Canonical.

[meziantou]

The CI run on Windows and Ubuntu 22.04, so it should work. And I build multiple projects on Linux using this package. What I can see is that the compiler is not up-to-date (but I think it should work). You can try to download the latest sdk (linux binaries x64) https://dotnet.microsoft.com/en-us/download/dotnet/6.0 and try with the dotnet from the zip file.

If it doesn't work, can you build using dotnet build /bl to generate a binary log file (msbuild.binlog). This log file contains all your environment variables, so be sure to build the project in a context that is not problematic. You can upload the file here.