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Full-text search
Overview
Getting Started
UI Components
Accordion
ActionSheet
Autocomplete
BarGauge
Box
Bullet
Button
ButtonGroup
Calendar
Chart
CheckBox
CircularGauge
ColorBox
ContextMenu
DataGrid
DateBox
DateRangeBox
DeferRendering
Diagram
Draggable
Drawer
DropDownBox
DropDownButton
FileManager
FileUploader
FilterBuilder
Floating Action Button
Form
Funnel
Gallery
Gantt
HtmlEditor
LinearGauge
List
LoadIndicator
LoadPanel
Lookup
Map
Menu
MultiView
NumberBox
PieChart
PivotGrid
PivotGridFieldChooser
PolarChart
Popover
Popup
ProgressBar
RadioGroup
RangeSelector
RangeSlider
Resizable
ResponsiveBox
Sankey
Scheduler
ScrollView
SelectBox
Slider
Sortable
Sparkline
Splitter
Switch
TabPanel
Tabs
TagBox
TextArea
TextBox
TileView
Toast
Toolbar
Tooltip
TreeList
TreeMap
TreeView
Getting Started
How To
API
Configuration
Methods
Events
Node
Types
ContentReadyEvent
DisposingEvent
InitializedEvent
ItemClickEvent
ItemCollapsedEvent
ItemContextMenuEvent
ItemExpandedEvent
ItemHoldEvent
ItemRenderedEvent
ItemSelectionChangedEvent
OptionChangedEvent
SelectAllValueChangedEvent
SelectionChangedEvent
TreeViewCheckBoxMode
TreeViewExpandEvent
Demos
Accessibility
VectorMap
Common Types
Utilities
Data Binding
Data Validation
TypeScript Guides
Localization and Globalization
UI Customization
Integration Guides
DevExtreme CLI
Data Analytics and BI
.NET Backend Solutions
Advanced Topics
Troubleshooting
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

JavaScript/jQuery TreeView Types

ContentReadyEvent

The type of the contentReady event handler's argument.

import { ContentReadyEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

DisposingEvent

The type of the disposing event handler's argument.

import { DisposingEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

InitializedEvent

The type of the initialized event handler's argument.

import { InitializedEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

ItemClickEvent

The type of the itemClick event handler's argument.

import { ItemClickEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

ItemCollapsedEvent

The type of the itemCollapsed event handler's argument.

import { ItemCollapsedEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

ItemContextMenuEvent

The type of the itemContextMenu event handler's argument.

import { ItemContextMenuEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

ItemExpandedEvent

The type of the itemExpanded event handler's argument.

import { ItemExpandedEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

ItemHoldEvent

The type of the itemHold event handler's argument.

import { ItemHoldEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

ItemRenderedEvent

The type of the itemRendered event handler's argument.

import { ItemRenderedEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

ItemSelectionChangedEvent

The type of the itemSelectionChanged event handler's argument.

import { ItemSelectionChangedEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

OptionChangedEvent

The type of the optionChanged event handler's argument.

import { OptionChangedEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

SelectAllValueChangedEvent

The type of the selectAllValueChanged event handler's argument.

import { SelectAllValueChangedEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

SelectionChangedEvent

The type of the selectionChanged event handler's argument.

import { SelectionChangedEvent } from "devextreme/ui/tree_view"
Type:

Object

Used in:

TreeViewCheckBoxMode

Specifies the checkbox display mode.

Type:

Literal Union

Accepted Values: 'none' | 'normal' | 'selectAll'

Used in:

TreeViewExpandEvent

Specifies the event on which to expand/collapse a node.

Type:

Literal Union

Accepted Values: 'dblclick' | 'click'

Used in: