When a LEAD Leadtools.Annotations.Engine.AnnObject is converted to a Leadtools.Dicom.DicomCompoundGraphic, it will be assigned a unique CompoundGraphicInstanceId. The DicomAnnotationsUtilities class maintains a CompoundGraphicInstanceId that is used for each DICOM Compound Graphic. Once a CompoundGraphicInstanceId is assigned to a DICOM Compound Graphic, it must no longer be used. The IncrementCompoundGraphicInstanceId function is used to increment to the next unused value. The default behavior of this function is to add one to the previous CompoundGraphicInstanceId, but this behavior can be changed by subscribing to the OnIncrementCompoundGraphicInstanceId event, and changing the value of CompoundGraphicInstanceId.
For an example, refer to FromAnnContainerToDataSet(DicomDataSet,AnnContainer).