[quote user="Paul Connelly"]What are you trying to accomplish?[/quote]
Following your previous hints, I'm exploring how to get a custom display string from a standard element property. For example, a closed element seems to belong to an EC AreaClass in the MstnPropertyFormatter schema. ECPropertyUnits has a list of StandardValues including Use Active Master Units, Acres and others. How do I obtain a string that measures a closed element in, say, Acres?
I find it rather easy to become lost in the forest of DgnECTypeAdapter, ECEnabler, DgnECInstance, DgnECTypeAdapterContext and ECProperty.