Class TreeNode

Represents a class that provides the implementation of Tree nodes in SfTreeGrid.

Inheritance

System.Object

TreeNode

Implements

System.IDisposable

System.ComponentModel.INotifyPropertyChanged

Namespace: Syncfusion.UI.Xaml.TreeGrid

Assembly: Syncfusion.Grid.WinUI.dll

Syntax

public class TreeNode : Object, IDisposable, INotifyPropertyChanged

Constructors

TreeNode()

Initializes a new instance of TreeNode class.

Declaration

public TreeNode()

Properties

ChildNodes

Gets or sets the ChildNodes.

Declaration

public TreeNodes ChildNodes { get; }

Property Value

Type	Description
TreeNodes

HasChildNodes

Gets the value which indicates whether the node has a child node(s) or not.

Declaration

public bool HasChildNodes { get; }

Property Value

Type	Description
System.Boolean

HasVisibleChildNodes

Gets the value which indicates whether the node has a child node(s) displayed in a View(matches filtering criteria) or not.

Declaration

public bool HasVisibleChildNodes { get; }

Property Value

Type	Description
System.Boolean

IsChecked

Gets a value which indicates whether node is checked or not.

Declaration

public Nullable<bool> IsChecked { get; }

Property Value

Type	Description
System.Nullable<System.Boolean>

IsExpanded

Gets or sets a value indicating whether the TreeNode is expanded or not.

Declaration

public bool IsExpanded { get; set; }

Property Value

Type	Description
System.Boolean

IsFiltered

Gets or sets a value that indicates whether node is filtered or not.

Declaration

public bool IsFiltered { get; }

Property Value

Type	Description
System.Boolean	trueIf the node is filtered (filter condition is not matched). It did not show in view;Otherwise,false.The default value is false.

See Also

Filter

Item

Gets or sets the item.

Declaration

public object Item { get; }

Property Value

Type	Description
System.Object

Level

Gets or sets the level.

Declaration

public int Level { get; }

Property Value

Type	Description
System.Int32

ParentNode

Gets or sets the Parent node.

Declaration

public TreeNode ParentNode { get; }

Property Value

Type	Description
TreeNode

VisibleNodesCount

Gets the number of visible child nodes(Child nodes which match the filtering criteria).

Declaration

public int VisibleNodesCount { get; }

Property Value

Type	Description
System.Int32

Methods

Dispose()

Disposes all the resources used by the TreeNode class.

Declaration

public void Dispose()

Dispose(Boolean)

Disposes all the resources used by the TreeNode class.

Declaration

protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
System.Boolean	disposing	true to release all the resources.

GetYAmountCache()

Gets the YAmountCache.

Declaration

public virtual int GetYAmountCache()

Returns

Type	Description
System.Int32	The YAmountCache.

PopulateChildNodes()

Populates the child nodes without expanding it.

Declaration

public void PopulateChildNodes()

PopulateChildNodes(IEnumerable<Object>)

Load the child nodes and update the UI when we populate the child items using async and await

Declaration

public void PopulateChildNodes(IEnumerable<object> childItems)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<System.Object>	childItems

PopulateChildNodes(IEnumerable)

Populates the child nodes from the given child items collection.

Declaration

public void PopulateChildNodes(IEnumerable childItems)

Parameters

Type	Name	Description
System.Collections.IEnumerable	childItems	The collection of child items to be populated as child nodes.

SetCheckedState(Nullable<Boolean>, Boolean, Boolean)

Sets the IsChecked property with additional parameter to handle recursive checking.

Declaration

public void SetCheckedState(Nullable<bool> value, bool canUpdateParentNode = true, bool canUpdateChildNodes = true)

Parameters

Type	Name	Description
System.Nullable<System.Boolean>	value	New value for IsChecked.
System.Boolean	canUpdateParentNode	specifies whether need to update parent node's state when EnableRecursiveChecking is true.
System.Boolean	canUpdateChildNodes	specifies whether need to update child node's state when EnableRecursiveChecking is True.

SetDirty()

Sets the dirty. When this is set to true, the YAmountCache and maxLevel will be re-computed for the tree node.

Declaration

public void SetDirty()

Events

PropertyChanged

Occurs when a property value changes.

Declaration

public event PropertyChangedEventHandler PropertyChanged

Event Type

Type	Description
System.ComponentModel.PropertyChangedEventHandler

Implements

System.IDisposable

System.ComponentModel.INotifyPropertyChanged