'Declaration
Public MustInherit Class C1VirtualDataCollection(Of T As Class) Inherits C1DataCollectionBase(Of T) Implements IDataCollection(Of T), ISupportAsyncLoading(Of T), ISupportConnection, ISupportEditing(Of T), ISupportFiltering, ISupportIndexing(Of T), ISupportRefreshing, ISupportSorting, ISupportVirtualization
public abstract class C1VirtualDataCollection<T> : C1DataCollectionBase<T>, IDataCollection<T>, ISupportAsyncLoading<T>, ISupportConnection, ISupportEditing<T>, ISupportFiltering, ISupportIndexing<T>, ISupportRefreshing, ISupportSorting, ISupportVirtualization where T: class