The relationship origin foreign Key.
[Visual Basic .NET] Public ReadOnly Property OriginForeignKey As String
[C#] public string OriginForeignKey {get;}
[C++]
HRESULT get_OriginForeignKey(
BSTR* relOrigFKey
);
[C++]Parameters
relOrigFKey [out, retval] relOrigFKey is a parameter of type BSTR
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.