When I try to create a CommonObject (Material Rhino 7) instance from a JSON string I get the following error: Unhandled exception. System.Runtime.Serialization.SerializationException: Unable to read CommonObject from base64 encoded string This error occurs with a json string of type Material. It d…

Hello @s_oosterhof , I had a quick poke around, and I can’t make it de-serialize either. Even if I skip the JSON part and just use the FromBase64String .

Does this mean this is a bug and if so how long would it take to fix it?

[image] s_oosterhof: Does anyone know why Material.FromJSON() doesn’t work and Brep.FromJSON(), Layer.FromJSON() does? Other than geometry, the only table objects that CommonObject.FromJSON will deserialize are layers. I’ve logged a feature request to add support for materials. https://mcne…

Thanks for letting us know that FromJSON() doesn’t work with the Material class yet. I’ll keep an eye on the feature request link.

@dale I just encountered the same issues with ObjectAttributes.FromJSON() and ToJSON(). Would be something very handy to have. Could you open a ticket for support these as well?

Sure - https://mcneel.myjetbrains.com/youtrack/issue/RH-66667

Material.FromJSON() Unhandled exception

Rhino Developer

brian (Brian Gillespie) January 24, 2023, 10:35pm 8

RH-66667 is fixed in the latest WIP

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Material.FromJSON() Unhandled exception

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