BuyLog In
DevExtreme
All docs
V 20.1
24.2
24.1
23.2
23.1
22.2
22.1
21.2
21.1
20.2
20.1
19.2
19.1
18.2
18.1
17.2
All docs
V20.1

General Information

.NET Subscription

What's Included
DevExpress Installation
DevExpress Code Examples

Common Tools

Project Converter
Assembly Deployment Tool
Localization Service

Quality Assurance and Productivity

CodeRush for Visual Studio (FREE)
TestCafe Studio

Desktop

Controls

WinForms
WPF
VCL
WinUI

Tools

WinForms Skin Editor
WPF Theme Designer
WPF Theme Editor (Legacy)
Coded UI Test Extension

Frameworks and Libraries

XAF - Cross-Platform .NET App UI
XPO - .NET ORM Library (FREE)
XPO Profiler
Core Libraries
Drawing Graphics Library
.NET App Security & Web API Service (FREE)

Web

Controls and Extensions

ASP.NET Web Forms Controls
ASP.NET MVC Extensions
ASP.NET Core Controls
ASP.NET Bootstrap Controls
DevExtreme
DevExtreme ASP.NET MVC Controls
Blazor Components

Tools

ASP.NET Theme Builder
ASP.NET Theme Deployer

Maintenance Mode

ASP.NET Core Bootstrap Controls

Mobile

Xamarin UI Controls (FREE)
.NET MAUI (FREE)

Enterprise and Analytic Tools

Reporting
Report and Dashboard Server
BI Dashboard
Office File API

End-User Documentation

Interface Elements for Desktop
Interface Elements for Web
Dashboard for Desktop
Dashboard for Web
24.2
24.1
23.2
23.1
22.2
22.1
21.2
21.1
20.2
20.1
19.2
19.1
18.2
18.1
17.2
Full-text search
API Reference
UI Components
Accordion
ActionSheet
Autocomplete
BarGauge
Box
Bullet
Button
ButtonGroup
Calendar
Chart
CheckBox
CircularGauge
ColorBox
ContextMenu
DataGrid
DateBox
DeferRendering
Diagram
Draggable
Drawer
DropDownBox
DropDownButton
FileManager
FileUploader
FilterBuilder
Form
Funnel
Gallery
Gantt
HtmlEditorCTP
LinearGauge
List
LoadIndicator
LoadPanel
Lookup
Map
Menu
MultiView
NavBar
NumberBox
PieChart
PivotGrid
PivotGridFieldChooser
PolarChart
Popover
Popup
ProgressBar
RadioGroup
RangeSelector
RangeSlider
Resizable
ResponsiveBox
Sankey
Scheduler
ScrollView
SelectBox
SlideOut
SlideOutView
Slider
Sortable
Sparkline
SpeedDialAction
Switch
TabPanel
Tabs
TagBox
TextArea
TextBox
TileView
Toast
Toolbar
Tooltip
TreeList
TreeMap
TreeView
Configuration
Methods
Events
contentReady
disposing
initialized
itemClick
itemCollapsed
itemContextMenu
itemExpanded
itemHold
itemRendered
itemSelectionChanged
optionChanged
selectAllValueChanged
selectionChanged
Node
ValidationGroup
ValidationSummary
Validator
VectorMap
Markup Components
UI Events
CSS Classes
Data Layer
Types
Utilities
Angular
React
Vue
ASP.NET MVC 5
ASP.NET Core
jQuery
UI Components
Data Binding
Common Features
Migrate to the New Version

General Information

.NET Subscription

What's Included
DevExpress Installation
DevExpress Code Examples

Common Tools

Project Converter
Assembly Deployment Tool
Localization Service

Quality Assurance and Productivity

CodeRush for Visual Studio (FREE)
TestCafe Studio

Desktop

Controls

WinForms
WPF
VCL
WinUI

Tools

WinForms Skin Editor
WPF Theme Designer
WPF Theme Editor (Legacy)
Coded UI Test Extension

Frameworks and Libraries

XAF - Cross-Platform .NET App UI
XPO - .NET ORM Library (FREE)
XPO Profiler
Core Libraries
Drawing Graphics Library
.NET App Security & Web API Service (FREE)

Web

Controls and Extensions

ASP.NET Web Forms Controls
ASP.NET MVC Extensions
ASP.NET Core Controls
ASP.NET Bootstrap Controls
DevExtreme
DevExtreme ASP.NET MVC Controls
Blazor Components

Tools

ASP.NET Theme Builder
ASP.NET Theme Deployer

Maintenance Mode

ASP.NET Core Bootstrap Controls

Mobile

Xamarin UI Controls (FREE)
.NET MAUI (FREE)

Enterprise and Analytic Tools

Reporting
Report and Dashboard Server
BI Dashboard
Office File API

End-User Documentation

Interface Elements for Desktop
Interface Elements for Web
Dashboard for Desktop
Dashboard for Web
A newer version of this page is available. Switch to the current version.

JavaScript/jQuery TreeView Events

This section describes events fired by this UI component.

See Also

contentReady

Raised when the UI component's content is ready.

Type:

Event

Main article: onContentReady.

See Also

disposing

Raised before the UI component is disposed of.

Type:

Event

Main article: onDisposing

See Also

initialized

Raised only once, after the UI component is initialized.

Type:

Event

Main article: onInitialized

See Also

itemClick

Raised when a collection item is clicked or tapped.

Type:

Event

Main article: onItemClick.

See Also

itemCollapsed

Raised when a tree view item is collapsed.

Type:

Event

Main article: onItemCollapsed

See Also

itemContextMenu

Raised when a collection item is right-clicked or pressed.

Type:

Event

Main article: onItemContextMenu

See Also

itemExpanded

Raised when a tree view item is expanded.

Type:

Event

Main article: onItemExpanded

See Also

itemHold

Raised when a collection item has been held for a specified period.

Type:

Event

Main article: onItemHold

See Also

itemRendered

Raised after a collection item is rendered.

Type:

Event

Main article: onItemRendered

See Also

itemSelectionChanged

Raised when a tree view item is selected or selection is canceled.

Type:

Event

Main article: onItemSelectionChanged

See Also

optionChanged

Raised after a UI component property is changed.

Type:

Event

Main article: onOptionChanged

See Also

selectAllValueChanged

Raised when the "Select All" check box value is changed.

Type:

Event

Main article: onSelectAllValueChanged

See Also

selectionChanged

Raised when a tree view item is selected or selection is canceled.

Type:

Event

Main article: onSelectionChanged

See Also