Civil 3D Interops Compatility in C3D 2020 ?

[Anonymous]

We are contemplating at work to migrate our 2019 codes that contain both .NET and COM (25%) Interops of Autocad and Civil 3D. I know the managed .NET will present no problems, but i have not tested the legacy Interops (e.g. Autodesk.AECC.Interop.*, and Autodesk.AutoCAD.*).

Where can i find any information about compatibility of legacy Interops of Civil 3D 2020? Has anyone tested them yet?

Is it worth migrating all COM codes to managed .NET codes?

Thanks,

Efren7717

[Jeff_M]

My COM code still works fine in C3D 2020. As long as you use the "Embed Interops" option in VS and use the non-specific year to instantiate them, you should be fine.

[Anonymous]

Thanks for reply.

Just want to clarify, did you not need to re-attach the 2020 versions, which means those interops are from previous version?

Thanks,

Efren7717

[Jeff_M]

No, the interops are from 2020, but in the older versions (starting with C3D 2013 perhaps?) I made sure the interop references had the Embed Interop Types set to true. Now, every new project that I bring forward automatically finds the new Interops. I DO have to change the references for the C3D .NET assemblies.

But all of the tools using C3D COM still work without needing any changes to the code.