How to Export Geometry in Grasshopper using C#

In this tutorial video I'm showing how to you can export Grasshopper geometry to various format like 3dm / obj / iges using C# scripting. The method using here is using a RunScript function to run Rhino's Export command which can be used tp run any Rhinoceros command from Grasshopper.
[Requirements]
- Rhino 6
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[@andreasettimi4477]

Just want to take a sec to thank you, ALL your videos are amazingly interesting and very useful, thanks again, and keep it up!

[@tosoja9714]

Thanks so much. Very useful video, I have been stuck for about 2 weeks all because I am completely new to scripting in Rhino. I need to do a parametric study and automate Rhino. First, I had to watch a video on how to use grasshopper for rhino. Followed by a video on how to automate grasshopper which is very good but did not have a tutorial on how to export with a script. I then had to search for how to export. Fortunately, I found this video. Now my whole script is a combination of Python which I am using to automate grasshopper and c# to save it. However, I do not care whether I am using more than one language or not. I am just glad I can now move on to the next task after been stuck for a while.

[@marshalmaskarenj]

Tried with Python to export OBJs, but script didn't work as expected: although it worked for singular geometries, it was exporting random mesh when trying to export multiple objects. Your script is very helpful and super efficient, THANK YOU SO MUCH!

[@ramanboywss]

Saved my business. Thank you! 助かりました！

[@xiaoyangzheng5761]

本当に役に立ちます

[@dzabota7048]

Thank you so much for this tutorial.i have a question. It is possible to export a geometry (mesh) directly to another program to do FEA analysis like robot structural analysis.

[@temporaryatmospheres1245]

You export just the geometry or the geometry with some animation ? It could works in blender ? I mean I want to export some animation from grasshopper to blender to adding materials do you think it works for me ?

[@sergey_fedorenko]

Great lessons! Please tell me how to create a new layer for the baked geometry and add attribute user text to the geometry.

[@amartuvshinnarangerel4336]

I need that too!

[@randoma83]

Thank you for the tutorial, I always wanted to export directly from Grasshopper. Do you think is also possible inside the script node tell the System to "send" the saved meshes to another program? For example: save the OBJ then open it in another program like 3dsmax, blender, modo... build something like a bridge between the two applications. Thanks

[@JunichiroHorikawa]

uncle pritt I think it’s doable but I think you also need to use the SDK of the application (like Max) you want to bridge with in order to send the data.

[@Esiddig]

Hi I wonder how can export and import to fbx format and embed the data in the model in grasshopper ?

[@user-es5np9cg5k]

I still get an error: the path contains invalid characters (line 0). What to do? How to fix it?

[@WALID0306]

thanks ! Blessings

[@shengc8761]

Hi there, appreciate this so much. Is this implementable in gh python as well?

[@shengc8761]

#ah figured it out import rhinoscriptsyntax as rs import Rhino if export: guids=[] print geometries.BranchCount for i in range(geometries.BranchCount): for n in range(geometries.Branches[i].Count): geom = geometries.Branches[i][n] guid=Rhino.RhinoDoc.ActiveDoc.Objects.Add(geom) guids.append(guid) for g in guids: Rhino.RhinoDoc.ActiveDoc.Objects.Select(g) filepath = directory + filename cmd = "_-Export " + "\"" + filepath + "\"" + " _Enter" Rhino.RhinoApp.RunScript(cmd, False) Rhino.RhinoDoc.ActiveDoc.Objects.Delete(guids,True)

[@federicodagostino2862]

Hi, thanks for all your great tutorials. For the moment I use plugins to export .ai files. Is there a way like this to do it?

[@JunichiroHorikawa]

Federico D'Agostino I think you can do that by simply changing the filename with .ai extension for the c# script shown in this video.

[@humann001]

How about importing? I've read it's not possible. Thanks for the video, it was great! (as usual)

[@JunichiroHorikawa]

I think you can import objects inside Grasshopper as well. I can try if anybody is interested.

[@humann001]

@@JunichiroHorikawa pleeease!

[@amartuvshinnarangerel4336]

@@JunichiroHorikawa Please do it

[@chocolata105]

Babe what do u mean manually make it in rhino