[]
Gets or sets a collection of property paths defining a group.
[TypeConverter(typeof(ObservableCollectionStringConverter))]
public ObservableCollection<string> PropertyNames { get; set; }
<TypeConverter(GetType(ObservableCollectionStringConverter))>
Public Property PropertyNames As ObservableCollection(Of String)
This property value can be defined in XAML as a string with property paths separated by comma or semicolon.