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| ArcObjects Help for .NET developers > ArcObjects namespaces > Schematic > ESRI.ArcGIS.Schematic > Interfaces > IS > ISchematicInMemoryFeaturePrimaryAssociation Interface > ISchematicInMemoryFeaturePrimaryAssociation.ObjectClassID Property (ArcObjects .NET 10.5 SDK) | 
Class ID related to the schematic in memory feature primary assocation.
[Visual Basic .NET] Public ReadOnly Property ObjectClassID As Integer
[C#] public int ObjectClassID {get;}
[C++]
HRESULT get_ObjectClassID(
  long* ID
);
[C++]
Parameters ID [out, retval] ID is a parameter of type long