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DataObject Group.
Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.
| Interfaces | Description | 
|---|---|
| IDataObjectGroup | DataObjectGroup | 
| IPersist (esriSystem) | |
| IPersistStream (esriSystem) | |
| ISupportErrorInfo (esriSystem) | |
| IXMLSerialize (esriSystem) | Provides access to members that XML serialize and deserialize an object to/from XML. | 
| IXMLVersionSupport (esriSystem) | Provides access to members that help in serializing an object to different namespaces (versions). |