How to read/write to Catchment Properties using .Net API?

[soonhui.ngu]

For a catchment, I want to be able to read/write the catchment properties such as runoff coefficient, Referenced Pipe Network Structure programmatically, for interoperability with other software:

However, it seems that there are no relevant properties under Autodesk.Civil.DatabaseServices.Catchment. And there is a post that somehow manages to export the referenced structure, by somehow exploiting the CatchmentLabel property ( which to me seems very brittle). But I doubt whether the code will work for all properties, under both read/write condition ( not just read).

Anyway to do this?

[soonhui.ngu]

An additional question. How to create a Catchment using .Net API?

There exists two overloads for Catchment.Create(), but one returns RXObject and another DisposableWrapper, instead of the usual ObjectId, so I'm quite unsure how to use them.

[augusto.goncalves]

Unfortunate the Catchment feature is not fully exposed on the API, you can see a few methods at http://docs.autodesk.com/CIV3D/2019/ENU/API_Reference_Guide/html/54440d04-8d43-9df3-bdd3-d5993aa9c27...

Also the constructor you mentioned are intended for internal (reason why it doesn't return the ObjectId expected)

[soonhui.ngu]

@augusto.goncalves , in that case, how can I workaround and still retrieve the catchment property via .Net API?