Editing existing Feature Class - add COM object

[ThomasNielsen]

Hello GeoNet,

We have an existing Feature Class that we want to modify, such that is uses our own feature (a COM component), like so:

Instead of this definition, where it only contains the "Polygon Features".

Can this be done?

[ThomasNielsen · Accepted solution]

Our issue was that our ID's were wrong in the code.
The ClassExtensionCLSID should return the same ID as TriggerExtension has.

Moreover, InstanceCLSID should always return 52353152-891A-11D0-BEC6-00805F7C4268, and should hence not get a new ID.