By enabling the showCheckBox property, you can render check box before each node of TreeView. However, some application needs to render check box in child nodes alone. In such case, you can remove the check box of the parent node by customizing the CSS.
import * as ReactDOM from 'react-dom';
import * as React from 'react';
import { TreeViewComponent } from '@syncfusion/ej2-react-navigations';
import { enableRipple } from '@syncfusion/ej2-base';
enableRipple(true);
export default class App extends React.Component {
constructor() {
super(...arguments);
// Data source for TreeView component
this.Countries = [
{ id: 1, name: 'India', hasChild: true, expanded: true },
{ id: 2, pid: 1, name: 'Assam' },
{ id: 3, pid: 1, name: 'Bihar' },
{ id: 4, pid: 1, name: 'Tamil Nadu' },
{ id: 6, pid: 1, name: 'Punjab' },
{ id: 7, name: 'Brazil', hasChild: true },
{ id: 8, pid: 7, name: 'Paraná' },
{ id: 9, pid: 7, name: 'Ceará' },
{ id: 10, pid: 7, name: 'Acre' },
{ id: 11, name: 'France', hasChild: true },
{ id: 12, pid: 11, name: 'Pays de la Loire' },
{ id: 13, pid: 11, name: 'Aquitaine' },
{ id: 14, pid: 11, name: 'Brittany' },
{ id: 15, pid: 11, name: 'Lorraine' },
{ id: 16, name: 'Australia', hasChild: true },
{ id: 17, pid: 16, name: 'New South Wales' },
{ id: 18, pid: 16, name: 'Victoria' },
{ id: 19, pid: 16, name: 'South Australia' },
{ id: 20, pid: 16, name: 'Western Australia' },
{ id: 21, name: 'China', hasChild: true },
{ id: 22, pid: 21, name: 'Guangzhou' },
{ id: 23, pid: 21, name: 'Shanghai' },
{ id: 24, pid: 21, name: 'Beijing' },
{ id: 25, pid: 21, name: 'Shantou' }
];
this.field = { dataSource: this.Countries, id: 'id', text: 'name', parentID: 'pid', hasChildren: 'hasChild' };
this.cssClass = "custom";
this.showCheckBox = true;
}
render() {
return (<div className='control-pane'>
<div className='control-section'>
<div className='control_wrapper'>
<TreeViewComponent fields={this.field} cssClass={this.cssClass} showCheckBox={this.showCheckBox}/>
</div>
</div>
</div>);
}
}
ReactDOM.render(<App />, document.getElementById('sample'));#loader {
color: #008cff;
height: 40px;
left: 45%;
position: absolute;
top: 45%;
width: 30%;
}
#treeparent {
display: block;
max-width: 350px;
max-height: 350px;
margin: auto;
overflow: auto;
border: 1px solid #dddddd;
border-radius: 3px;
}
.custom .e-list-item.e-level-1 .e-text-content.e-icon-wrapper
.e-checkbox-wrapper {
display: none
}import * as ReactDOM from 'react-dom';
import * as React from 'react';
import {TreeViewComponent, NodeSelectEventArgs } from '@syncfusion/ej2-react-navigations';
import {enableRipple} from '@syncfusion/ej2-base';
enableRipple(true);
export default class App extends React.Component<{}, {}> {
// Data source for TreeView component
private Countries: { [key: string]: Object }[] = [
{ id: 1, name: 'India', hasChild: true, expanded: true },
{ id: 2, pid: 1, name: 'Assam' },
{ id: 3, pid: 1, name: 'Bihar' },
{ id: 4, pid: 1, name: 'Tamil Nadu' },
{ id: 6, pid: 1, name: 'Punjab' },
{ id: 7, name: 'Brazil', hasChild: true },
{ id: 8, pid: 7, name: 'Paraná' },
{ id: 9, pid: 7, name: 'Ceará' },
{ id: 10, pid: 7, name: 'Acre' },
{ id: 11, name: 'France', hasChild: true },
{ id: 12, pid: 11, name: 'Pays de la Loire' },
{ id: 13, pid: 11, name: 'Aquitaine' },
{ id: 14, pid: 11, name: 'Brittany' },
{ id: 15, pid: 11, name: 'Lorraine' },
{ id: 16, name: 'Australia', hasChild: true },
{ id: 17, pid: 16, name: 'New South Wales' },
{ id: 18, pid: 16, name: 'Victoria' },
{ id: 19, pid: 16, name: 'South Australia' },
{ id: 20, pid: 16, name: 'Western Australia' },
{ id: 21, name: 'China', hasChild: true },
{ id: 22, pid: 21, name: 'Guangzhou' },
{ id: 23, pid: 21, name: 'Shanghai' },
{ id: 24, pid: 21, name: 'Beijing' },
{ id: 25, pid: 21, name: 'Shantou' }
]
private field:Object ={ dataSource: this.Countries, id: 'id', text: 'name', parentID: 'pid', hasChildren: 'hasChild' };
private cssClass="custom";
private showCheckBox: boolean = true;
render() {
return (
<div className = 'control-pane'>
<div className='control-section'>
<div className='control_wrapper'>
{/* Render TreeView */}
<TreeViewComponent fields={this.field} cssClass={this.cssClass} showCheckBox={this.showCheckBox} />
</div>
</div>
</div>
)
}
}
ReactDOM.render(<App />, document.getElementById('sample'));