Key	Action
Shift + Mouse Wheel	Scrolls the content left/right if the scrollDirection property is "horizontal" or "both".
↑ / ↓	Moves focus to the previous/next node.
Home / End	Moves focus to the first/last node.
→	Expands the node.
←	Collapses the node.
Asterisk Sign (*)	Expands all nodes. Available only if expandAllEnabled is set to true.
Minus Sign (-)	Collapses all nodes. Available only if expandAllEnabled is set to true.
Enter or Space	Selects the node.
Shift + ↑ / Shift + ↓	Extends selection up/down by one node.
Shift + Home	Extends selection up to the first node.
Shift + End	Extends selection down to the last node.

Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.

jQuery

JavaScript

function registerKeyHandlers () {
    const treeView = $("#treeViewContainer").dxTreeView("instance");
    treeView.registerKeyHandler("backspace", function(e) {
        // The argument "e" contains information on the event
    });
    treeView.registerKeyHandler("space", function(e) {
        // ...
    });
}

Angular

TypeScript

import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxTreeViewModule, DxTreeViewComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
    @ViewChild(DxTreeViewComponent, { static: false }) treeView: DxTreeViewComponent;
    // Prior to Angular 8
    // @ViewChild(DxTreeViewComponent) treeView: DxTreeViewComponent;

    ngAfterViewInit () {
        this.treeView.instance.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.treeView.instance.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
@NgModule({
    imports: [
        // ...
        DxTreeViewModule
    ],
    // ...
})

Vue

<template>
    <DxTreeView :ref="myTreeViewRef" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxTreeView from 'devextreme-vue/tree-view';

const myTreeViewRef = 'my-tree-view';

export default {
    components: {
        DxTreeView
    },
    data() {
        return {
            myTreeViewRef
        }
    },
    computed: {
        treeView: function() {
            return this.$refs[myTreeViewRef].instance;
        }
    },
    mounted: function() {
        this.treeView.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.treeView.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
</script>

React

App.js

import React from 'react';
import 'devextreme/dist/css/dx.light.css';

import { TreeView } from 'devextreme-react/tree-view';

class App extends React.Component {
    constructor(props) {
        super(props);

        this.treeViewRef = React.createRef();
    }

    render() {
        return (
            <TreeView ref={this.treeViewRef} />
        );
    }

    get treeView() {
        return this.treeViewRef.current.instance;
    }

    componentDidMount() {
        this.treeView.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.treeView.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}

export default App;

General Information

.NET Subscription

Common Tools

Quality Assurance and Productivity

Desktop

Controls

Tools

Frameworks and Libraries

Web

Controls and Extensions

Tools

Maintenance Mode

Mobile

Enterprise and Analytic Tools

End-User Documentation

General Information

.NET Subscription

Common Tools

Quality Assurance and Productivity

Desktop

Controls

Tools

Frameworks and Libraries

Web

Controls and Extensions

Tools

Maintenance Mode

Mobile

Enterprise and Analytic Tools

End-User Documentation

Keyboard Support

jQuery

Angular

Vue

React

See Also