![](dotnetdiagramimages/GrapeCity_Documents_Pdf_GrapeCity_Documents_Pdf_Layers_OptionalContentGroupList.png)
'Declaration Public Class OptionalContentGroupList Inherits GrapeCity.Documents.Common.ObservableCollectionEx(Of OptionalContentGroup)
public class OptionalContentGroupList : GrapeCity.Documents.Common.ObservableCollectionEx<OptionalContentGroup>
System.Object
System.Collections.ObjectModel.Collection<T>
System.Collections.ObjectModel.ObservableCollection<T>
GrapeCity.Documents.Pdf.Layers.OptionalContentGroupList