GrasshopperDocument.AddObject how to run/code it on VS

[Ambrosinus (Luciano Ambrosini)]

Hello Everyone,

after searching on Discourse Forum and on the net, I only found this source about my issue:
http://james-ramsden.com/grasshopperdocument-component-grasshopper-visual-studio/
and this below:
https://discourse.mcneel.com/t/grasshopperdocument-objects-in-vs/63418/2

But it is not clear to me how to integrate the codes above in my VS script.

The problem is this CS0103:

I hope that someone could give me an example/tips to go on my task.
Thank you in advance!

[fraguada (Luis Fraguada)]

Without seeing more of the code, it seems you have not defined GrasshopperDocument. Both Resources you link to show an example of how to do this:

GrasshopperDocument.Objects in VS

Ok, so VB was a typo, VS was meant. Now I understand the problem. The OnPingDocument method is what you need when developing within Visual Studio. Something along these lines: private IGH_DocumentObject[] AllCanvasObjects() { var doc = OnPingDocument(); if (doc == null) return new IGH_DocumentObject[0]; return doc.Objects.ToArray(); }

[Ambrosinus (Luciano Ambrosini)]

Thank you, Luis, for your prompt response!

You are right I don’t know why it gave me an error. Anyway, when you code even a healthy sleep it makes you see things differently and you avoid making the same mistake. I will try to update this thread as soon as I can compile everything correctly. Thanks again.

[gankeyu (Keyu Gan)]

GrasshopperDocument is defined in the built-in C# component, referencing the current Grasshopper document.

• If you are coding a component, you should use OnPingDocument().
• If you are coding outside a component, and in most cases it is Instances.ActiveCanvas.Document
• If your plugin works in headless contexts like rhino.compute and you are coding outside a component, it should be enumerating GH_DocumentServer.

[Ambrosinus (Luciano Ambrosini)]

Thank you Keyu Gan!

[Rh-3d-p (R-d)]

Also For RhinoDocument? What?
Can we create a Class for reference toRhinoDocument and GrasshopperDocument similar c# component? For fast results in Vs?

[gankeyu (Keyu Gan)]

Yes and no.

For some cases you can, but it won’t be faster. For some cases you shouldn’t.

[gankeyu (Keyu Gan)]

Meanwhile, AddObject in SolveInstance is dangerous. You should, at least, do it in AfterSolveInstance.