The domain that is different from the Layer.
[Visual Basic .NET] Public ReadOnly Property Domain As IDomain
[C#] public IDomain Domain {get;}
[C++]
HRESULT get_Domain(
IDomain** Domain
);
[C++]Parameters
Domain [out, retval]Domain is a parameter of type IDomain
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.