Datatypes in Swagger UI do not support GUID,Byte[]

[Gautham S]

HI ,

I have a .net Web api project and I have a response model with 6 properties on which one is byte[] and another is GUID .

While seeing the swagger UI for the API the model and model schema I see the data type is being defined as string for both fields.

Is there any alternative for it?

[Ron Ratovsky]

The type would probably be defined as string because there aren’t too many options. The ‘sub types’ can be defined as formats though. 

While it may not be displayed in swagger-ui, check the actual spec you get to see if it’s described there.

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[Gautham S]

I have attached the document which describes my issue.Let me know in case any solution available.

I added swagger using nuget and using it with help of swaggerconfig.cs file.

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[Ron Ratovsky]

I need to see the swagger.json/yaml file that’s loaded by swagger-ui.

Code or screenshots don’t cover the details I’m looking to investigate.

If there’s a concern about sharing the spec in public, feel free to email it to me directly.

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[Ron Ratovsky]

Thanks for providing the details in private. To help the community I’ll reply here without exposing any sensitive details.

So the issue is split into two, but both come from Swashbuckle, at least at first.

1. The byte array ends up being represented as a BASE64 string. I’m not sure what you want or expect to be there as byte array, so it’s hard to say whether that’s the expected result or not.
2. As for the GUID, that’s not reflected in what’s generated from Swashbuckle. You’d need to open a ticket on the project directly and ask how to document that (this would require a custom format field value).