TreeViewControl.AllowCascadeUpdate Property

Gets or sets whether the TreeViewControl enables cascading data updates. This is a dependency property.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v26.1.dll

Declaration

C#

public bool AllowCascadeUpdate { get; set; }

VB.NET

Public Property AllowCascadeUpdate As Boolean

Property Value

Type	Default	Description
Boolean	false	true to enable cascading data updates; otherwise, false.

Remarks

The TreeViewControl loads all visible nodes simultaneously while a user scrolls view. Set the AllowCascadeUpdate property to true to load nodes in the background and maintain UI responsiveness.

Example: Enable Cascading Data Updates

The following example enables cascading data updates in the TreeViewControl:

XAML

<dx:ThemedWindow x:Class="TreeViewControlApp.MainWindow"
                 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                 xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
                 xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid"
                 Title="TreeViewControl Demo" Height="450" Width="600">
        <dxg:TreeViewControl x:Name="tree"
                             ChildNodesPath="Employees"
                             TreeViewFieldName="Name"
                             AllowCascadeUpdate="True"/>
</dx:ThemedWindow>

Refer to the following help topic for additional information: Cascading Data Updates.