Hi everyone, I’m experiencing an issue with Rhino 6. I have a C# plugin that generates some information and stores it as UserData in the geometry. As you can see from the attached snippet, the data is stored into file: . [before] problem is, when I reload my 3dm file, said data is gone [after] …

That happened to me once. is save plugin data checked? [image]

@Riccardo_Di_Lorenzo I noticed last week that RhinoObject.UserData was not writing when the document closes and created a ticket for it here. It could be that GeometryBase is having the same issue. https://mcneel.myjetbrains.com/youtrack/issue/RH-48844 Does the UserData stick for you if you apply …

Hey, yes, I checked the box. I think the problem is more on the retrieval than the saving. Though without the source it’s of course impossible to tell for sure.

Dear Trav, I checked what you asked and I can tell you that nothing seems to have changed, even though my UserData.Write implementation seems to call ArchivableDictionary just fine. Problem must be somewhere in deserializing it. I’m quite surprised this flew under the radar for a bit, maybe not man…

Hey @dale , sorry if I’m being antsy, but do you have any update to share regarding the issue? I’ve been looking at your issue tracker: https://mcneel.myjetbrains.com/youtrack/issue/RH-48844 and I can tell it’s not being worked on. Issue is, the current state of affair breaks the workflow for my us…

Hi @Riccardo_Di_Lorenzo , Is it possible to get a simple project sample that isn’t working for you? Thanks, – Dale

Hi Dale, thanks for your answer. Not sure if you are referring to a “Rhino project” or a “C# project” I made you both. Weirdly enough with the example project I’m able to retrieve the UserData I wrote in a previous session, but to my defense, the data we write with our plugin is far larger than tha…

Hi @Riccardo_Di_Lorenzo , A couple of things: 1.) If you don’t implement OnUserData.OnDuplicate, then your user data won’t be copied with the object it is attached to is copied (which happens all the time). 2.) I don’t understand why you are using an ArchivableDictionary and not just calling the W…

Hey Dale, thanks for the project. I try to run the plugin you wrote with the following results: Media3.zip (6.1 MB) Maybe I’m misunderstanding the meaning of that bool “saved in file”? It also looks like that writing UserData without touching the object doesn’t trigger the save event, as you can …

UserData is broken for geometries. It wasn't 1 month ago

Rhino Rhino for Windows

brian (Brian Gillespie) September 29, 2023, 12:22am 11

RH-48844 is fixed in the latest BETA

Topic		Replies	Views
Can't save UserData with Object.UserData,Only Object.Attributes.UserData Rhino Developer windows	16	208	March 3, 2025
Add UserData in RhinoObject cannot be saved in 3dm file Rhino Developer rhinocommon , bug	20	3124	January 28, 2020
UserData - Regression in Rhino 8 Rhino Developer windows , rhino8	2	401	December 8, 2023
Strange Mesh.UserData Serialization Behavior Rhino Developer windows	4	441	October 7, 2023
RhinoObject UserData(ArchivableDictionary) lose Grasshopper Developer windows	0	289	May 31, 2022

UserData is broken for geometries. It wasn't 1 month ago

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