The GUID for the COM Class (CoClass) corresponding to the class extension for this object class.
[Visual Basic .NET] Public ReadOnly Property EXTCLSID As UID
[C#] public UID EXTCLSID {get;}
[C++]
HRESULT get_EXTCLSID(
IUID** ClassExtensionCLSID
);
[C++]Parameters
ClassExtensionCLSID [out, retval]ClassExtensionCLSID is a parameter of type IUID
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.