OpenAPI: Enums are missing description, and x-enumNames

[niemyjski]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

Enums are missing description, and x-enumNames. See SampleModel.BillingStatus (#58230 (comment)) kind of covers this, but not addressed and x-ms-enum is not an industry standard and should be removed (If it is included this way which it is not).

Expected Behavior

These should just work out of the box.

Steps To Reproduce

Clone https://github.com/exceptionless/aspnet-core-net10-issues# and run it, hit the open api json endpoint.

Exceptions (if any)

No response

.NET Version

10 preview 6

Anything else?

MacOS Latest, Rider/VS Code

#62150

[captainsafia]

Guidance on emitting enums is documented in https://learn.microsoft.com/en-us/aspnet/core/fundamentals/openapi/include-metadata?view=aspnetcore-9.0&tabs=minimal-apis#enum.

In .NET 10, we full support enums using the new support in OpenAPI v3.1.

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