Get error message when try to run code aeccDoc.Surfaces (aeccDoc = AeccDocument)

[handgth]

Hi everyone,

I'm trying to create tin surface from LandXml file by using IAeccSurfaces Interface.

(https://adndevblog.typepad.com/infrastructure/2012/12/creating-a-tin-surface-from-landxml-file.html)

But I got the error message in row  "Autodesk.AECC.Interop.Land.AeccSurfaces oAeccSurfaces = aeccDoc.Surfaces;"

How can I fix this problem?

Or Is there any other way I can create TinSurface from file LandXml ?

Thanks everyone.

[Todd_Rogers]

See if @Civil3DReminders_com can help out...

[Jeff_M]

Which release of Civil 3D are you coding for? Do you really need to be using the COM API? There is now a .NET API method to create a TinSurface from a LandXML file.

[Civil3DReminders_com · Accepted solution]

You have to change this line: 

string sAppName = "AeccXUiLand.AeccApplication.10.0"; // Civil 3D 2013

to match the version of Civil 3D you are using. 

I'd suggest using the method Jeff shows here to never have to use the string again: 
https://forums.autodesk.com/t5/civil-3d-customization/aeccxuiland-aeccapplication/m-p/8775700/highli... 

[handgth]

I'm working with Civil3d 2020 and Civil3d 2021.

No, I don't. I can not find that method in .NET API ... so I have to use the method in COM API.
Could you please send me the .NET API method to create a TinSurface from a LandXML file?

Thank you.

[hosneyalaa · Accepted solution]

This. method to create a TinSurface from a LandXML file?

https://help.autodesk.com/view/CIV3D/2022/ENU/?guid=e3344531-c49f-503d-1a47-d26ff98faf21

[handgth]

Thank you

[handgth]

Thank you.