Bug Report T1180157
Visible to All Users

Inline Lambda refactoring breaks code

created 2 years ago

Using .NET 7 minimal API, I start with this file:

C#
public static class CorpServicesEndpoints { public static void RegisterCorpServices(this IEndpointRouteBuilder builder) { var group = builder.MapGroup("corpServices"); group .MapPut("utilization", Foo) .RequireAuthorization(PolicyName.CorpServicesAssessmentUploader); } private static async Task<Results<NoContent, BadRequest<List<string>>>> Foo(IFormFileCollection files, ICorpServicesRepository repository, CancellationToken cancellationToken) { var results = await repository.UploadUtilizationAsync(files, cancellationToken); if (results is null) return TypedResults.NoContent(); else return TypedResults.BadRequest(results); } }

Then I tell it to inline the lambda, and I end up with this:

C#
group .MapPut("utilization", async (files, repository, cancellationToken) => { var results = await repository.UploadUtilizationAsync(files, cancellationToken); if (results is null) return TypedResults.NoContent(); else return TypedResults.BadRequest(results); }) .RequireAuthorization(PolicyName.CorpServicesAssessmentUploader);

which no longer compiles because:

CS8934: Cannot convert lambda expression to type RequestDelegate because the return type does not match the delegate return type.

Comments (1)
PW PW
Przemyslaw Wlodarczak (DevExpress) 2 years ago

    Scott,

    I reproduced this issue. We will fix it soon.

    Answers approved by DevExpress Support

    created 2 years ago

    We have addressed the issue described in this ticket and will include a fix in our next maintenance update. Should you need to apply our fix prior to official release, you can request a hotfix here.

    Important Notes:

    • Hotfixes may be unavailable for Early Access/Beta builds or updates set for release within a week.
    • .NET only: in the NuGet Package Manager, use your personal NuGet feed and check the "Include prerelease" option to view the hotfix package in the "Updates" tab.
      Comments (3)
      PW PW
      Przemyslaw Wlodarczak (DevExpress) 2 years ago

        Hi,

        Do you mind if we make this ticket public so that we can include it in the "Resolved issues" for the next release?

          Sure, that’s fine.

          PW PW
          Przemyslaw Wlodarczak (DevExpress) 2 years ago

            Thank you.

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