Class HierarchicalCollectionViewBase

Serves as a base class to all hierarchical views.

Inheritance
System.Object
QueryableCollectionView
HierarchicalCollectionViewBase
HierarchicalChildCollectionView
HierarchicalCollectionView
Inherited Members
Namespace: Telerik.Windows.Data
Assembly: Telerik.Windows.Data.dll

Syntax

public abstract class HierarchicalCollectionViewBase : QueryableCollectionView, IEditableCollectionViewAddNewItem, IEditableCollectionView, ICollectionView, IEnumerable, INotifyCollectionChanged, INotifyPropertyChanged, IPagedCollectionView, IWeakEventListener<NotifyCollectionChangedEventArgs>, IWeakEventListener<CurrentChangingEventArgs>, IQueryableCollectionView, IItemProperties, IDisposable

Properties

HierarchyDescriptors

Gets the hierarchy descriptors used for hierarchy construction. If this view is a child one, its root view hierarchy descriptors are returned.

Declaration
public abstract HierarchyDescriptorCollection HierarchyDescriptors { get; }
Property Value
HierarchyDescriptorCollection

The hierarchy descriptors.

InternalCount

Protected accessor to private count.

Declaration
protected override int InternalCount { get; }
Property Value
System.Int32

Overrides

IsGrouped

Gets a value indicating whether this instance is grouped.

Declaration
public override bool IsGrouped { get; }
Property Value
System.Boolean

true if this instance is grouped; otherwise, false.
Overrides
Remarks

Returns false. Grouping is not supported.

ShouldInitializeGroupProxy

Gets a value indicating whether should initialize group proxy.

Declaration
protected override bool ShouldInitializeGroupProxy { get; }
Property Value
System.Boolean

true if should initialize group proxy; otherwise, false.
Overrides
Remarks

Always false for HierarchicalCollectionViewBase.

Methods

CreateInternalList()

Called when internal list needs to be created.

Declaration
protected override void CreateInternalList()
Overrides

CreateView()

Returns System.Linq.IQueryable with applied filtering, sorting, grouping and paging.

Declaration
protected override IQueryable CreateView()
Returns
System.Linq.IQueryable

Overrides
Remarks

Overrides the CreateView method and returns a IQueryable view specific to the hierarchy collection view.

GetItemAt(Int32)

Retrieves the item at the specified zero-based index in the view.

Declaration
public override object GetItemAt(int index)
Parameters
System.Int32 index

Returns
System.Object

Overrides

InitializeInternalList(IQueryable)

Called when internal list should be initialized.

Declaration
protected override void InitializeInternalList(IQueryable view)
Parameters
System.Linq.IQueryable view

Overrides

OnFilterDescriptorsChanged()

Called when anything in the filter descriptors changes.

Declaration
protected override void OnFilterDescriptorsChanged()
Overrides

OnFilterDescriptorsCollectionChanged(Object, NotifyCollectionChangedEventArgs)

Invoked when the FilterDescriptors collection changes.

Declaration
protected override void OnFilterDescriptorsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
Parameters
System.Object sender

Current instance of the QueryableCollectionView collection.
System.Collections.Specialized.NotifyCollectionChangedEventArgs e

Information about the change.
Overrides

OnFilterDescriptorsItemChanged(Object, ItemChangedEventArgs<IFilterDescriptor>)

Invoked when the FilterDescriptors item changes.

Declaration
protected override void OnFilterDescriptorsItemChanged(object sender, ItemChangedEventArgs<IFilterDescriptor> e)
Parameters
System.Object sender

Current instance of the QueryableCollectionView collection.
ItemChangedEventArgs<IFilterDescriptor> e

Information about the change.
Overrides

OnSortDescriptorsCollectionChanged(Object, NotifyCollectionChangedEventArgs)

Invoked when the SortDescriptors collection changes.

Declaration
protected override void OnSortDescriptorsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
Parameters
System.Object sender

Current instance of the QueryableCollectionView collection.
System.Collections.Specialized.NotifyCollectionChangedEventArgs e

Information about the change.
Overrides

PopulateInternalList(IQueryable)

Called when internal list should be populated.

Declaration
protected override void PopulateInternalList(IQueryable view)
Parameters
System.Linq.IQueryable view

Overrides

RefreshOnItemAction(Object, ItemAction)

Refreshes the view according to the item and the respective action.

Declaration
protected override void RefreshOnItemAction(object item, ItemAction action)
Parameters
System.Object item

The item.
ItemAction action

The action.
Overrides

RefreshOverride()

Re-create the view over the associated IList.

Declaration
protected override void RefreshOverride()
Overrides

Extension Methods