Class TreeGridPagedCollectionView

Represents a class that maintains the implementation of TreeGridPagedCollectionView in SfTreeGrid.

Inheritance
System.Object
TreeGridView
TreeGridQueryableView
TreeGridPagedCollectionView
Implements
System.ComponentModel.IEditableCollectionView
System.IDisposable
System.Collections.IEnumerable
Inherited Members
Namespace: Syncfusion.UI.Xaml.TreeGrid
Assembly: Syncfusion.SfGrid.WPF.dll
Syntax
public class TreeGridPagedCollectionView : TreeGridQueryableView, ITreeGridViewNotifier, IEditableCollectionView, IDisposable, IPagedCollectionView, IEnumerable

Constructors

TreeGridPagedCollectionView(IEnumerable, SfTreeGrid)

Initializes a new instance of TreeGridPagedCollectionView with the specified source and the SfTreeGrid.

Declaration
public TreeGridPagedCollectionView(IEnumerable source, SfTreeGrid treeGrid)
Parameters
Type Name Description
System.Collections.IEnumerable source

The source.
SfTreeGrid treeGrid

The sfTreeGrid.

Methods

add_PageChanged(PageChangedEventHandler)

Declaration
public void add_PageChanged(PageChangedEventHandler value)
Parameters
Type Name Description
PageChangedEventHandler value

add_PageChanging(PageChangingEventHandler)

Declaration
public void add_PageChanging(PageChangingEventHandler value)
Parameters
Type Name Description
PageChangingEventHandler value

AttachTreeView(Object)

Associates treeGrid in view.

Declaration
public override void AttachTreeView(object treeGrid)
Parameters
Type Name Description
System.Object treeGrid
Overrides

DetachTreeView()

Detach the grid instance present in the view while disposing the view.

Declaration
public override void DetachTreeView()
Overrides

GetEnumerator()

Declaration
public IEnumerator GetEnumerator()
Returns
Type
System.Collections.IEnumerator

LoadDynamicItems(Int32, IEnumerable)

Declaration
public void LoadDynamicItems(int startIndex, IEnumerable items)
Parameters
Type Name Description
System.Int32 startIndex
System.Collections.IEnumerable items

remove_PageChanged(PageChangedEventHandler)

Declaration
public void remove_PageChanged(PageChangedEventHandler value)
Parameters
Type Name Description
PageChangedEventHandler value

remove_PageChanging(PageChangingEventHandler)

Declaration
public void remove_PageChanging(PageChangingEventHandler value)
Parameters
Type Name Description
PageChangingEventHandler value

ResetCache()

Clears the cache while using OnDemandPaging.

Declaration
public void ResetCache()
Remarks

While navigating between pages, records are loaded through OnDemandLoading event and the loaded records will be maintained in cache. If you navigate to already navigated page, then records are loaded from cache and the OnDemandLoading event will not fire for that corresponding page. You can clear the cache by using this method and now the OnDemandLoading event will be raised when you navigate to the same page. And the records will be loaded through event instead of loading from cache.

ResetCacheForPage(Int32)

Reset the cache to the given page index.

Declaration
public void ResetCacheForPage(int pageIndex)
Parameters
Type Name Description
System.Int32 pageIndex

Index of the page to reset its cache.
See Also

UpdateNodesOnPropertyChange(Object, PropertyChangedEventArgs, TreeNode)

Check TreeGridView on property changes and do the actions.

Declaration
protected override void UpdateNodesOnPropertyChange(object sender, PropertyChangedEventArgs e, TreeNode treeNode = null)
Parameters
Type Name Description
System.Object sender

updated record.
System.ComponentModel.PropertyChangedEventArgs e

PropertyChangedEventArgs.
TreeNode treeNode

Tree node.
Overrides

Events

PageChanged

Occurs when the page is changed.

Declaration
public event PageChangedEventHandler PageChanged
Event Type
Type
PageChangedEventHandler

PageChanging

Occurs when the page is changing.

Declaration
public event PageChangingEventHandler PageChanging
Event Type
Type
PageChangingEventHandler

Implements

System.ComponentModel.IEditableCollectionView
System.IDisposable
System.Collections.IEnumerable