'宣言
Public Class ThumbnailItemCollectionConverter Inherits GrapeCity.ActiveReports.Converters.AdapterConverter(Of ObservableCollection(Of ThumbnailItemViewModel),ObservableCollection(Of IPageModel))
public class ThumbnailItemCollectionConverter : GrapeCity.ActiveReports.Converters.AdapterConverter<ObservableCollection<ThumbnailItemViewModel>,ObservableCollection<IPageModel>>