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.SfGrid.UWP.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
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
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
System.Boolean

IsChecked

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

Declaration
public Nullable<bool> IsChecked { get; }
Property Value
Type
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
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

Item

Gets or sets the item.

Declaration
public object Item { get; }
Property Value
Type
System.Object

Level

Gets or sets the level.

Declaration
public int Level { get; }
Property Value
Type
System.Int32

ParentNode

Gets or sets the Parent node.

Declaration
public TreeNode ParentNode { get; }
Property Value
Type
TreeNode

VisibleNodesCount

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

Declaration
public int VisibleNodesCount { get; }
Property Value
Type
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.

PopualateChildNodes()

Declaration
public void PopualateChildNodes()

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
System.ComponentModel.PropertyChangedEventHandler

Implements

System.IDisposable
System.ComponentModel.INotifyPropertyChanged

Extension Methods