I have a CataloEntryRow object as input.
I want to load values of user defined meta fields.
What API can I use?
You can use MetaObject static method Load(MetaDataContext context, int objectId, int metaClassId) to load the MetaObject instance (which is the metaclass instance). The objectId is the catalogentryid and the metaclassId is entryRow.MetaClassId.