[CONNECT C#] How to associate a Picklist with an ItemType Property?

I can see classes ItemType and Picklist in MstnPlatformNET help.  What I can't see is the way to associate a Picklist with an ItemType property.  That is, how do I write code that informs MyItemType.MyProperty that its values should be restricted to those specified in MyPicklist?

With MicroStation CONNECT Update 12, Picklists are added to the C++ MicroStationAPI.  The functionality is similar to the .NET API.  However, C++ doesn't provide the CustomProperty::PickListName property to assign a Picklist to an Item Type Property.