IClass.CLSID Property

The GUID for the COM Class (CoClass) corresponding to instances of this object class.

[Visual Basic 6.0]
Property CLSID As IUID

[Visual Basic .NET]
Public ReadOnly Property CLSID As UID

[C#]
public UID CLSID {get;}

[Java]
public IUID getCLSID()
throws
    IOException,
    AutomationException

[C++]
HRESULT get_CLSID(
  IUID** InstanceCLSID
);

[C++]

Parameters

InstanceCLSID [out, retval]

InstanceCLSID is a parameter of type IUID

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

EDN: ESRI Developer Network