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Form Submit in React ListBox component

In the following code snippet, the value that is in selected state will be sent on form submit.

Source
Preview
index.tsx
index.html
index.jsx
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { ListBoxComponent } from '@syncfusion/ej2-react-dropdowns';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';

export default class App extends React.Component<{}, {}> {
   private data: { [key: string]: Object }[] = [
    { text: 'Hennessey Venom', id: 'list-01' },
    { text: 'Bugatti Chiron', id: 'list-02' },
    { text: 'Bugatti Veyron Super Sport', id: 'list-03' },
    { text: 'SSC Ultimate Aero', id: 'list-04' },
    { text: 'Koenigsegg CCR', id: 'list-05' },
    { text: 'McLaren F1', id: 'list-06' },
    { text: 'Aston Martin One- 77', id: 'list-07' },
    { text: 'Jaguar XJ220', id: 'list-08' },
    { text: 'McLaren P1', id: 'list-09' },
    { text: 'Ferrari LaFerrari', id: 'list-10' },
];
  render() {
    return (
    <form>
      <ListBoxComponent dataSource={this.data}/>
      <ButtonComponent isPrimary="true" content="Submit"></ButtonComponent>
    </form>
    );
  }
}
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ListBox</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for React Components" />
    <meta name="author" content="Syncfusion" />
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-react-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-react-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-react-buttons/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
    <style>
        #loader {
            color: #008cff;
            height: 40px;
            left: 45%;
            position: absolute;
            top: 45%;
            width: 30%;
        }
    </style>
</head>

<body>
    <div id='sample' style="margin: 20px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { ListBoxComponent } from '@syncfusion/ej2-react-dropdowns';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
export default class App extends React.Component {
    constructor() {
        super(...arguments);
        this.data = [
            { text: 'Hennessey Venom', id: 'list-01' },
            { text: 'Bugatti Chiron', id: 'list-02' },
            { text: 'Bugatti Veyron Super Sport', id: 'list-03' },
            { text: 'SSC Ultimate Aero', id: 'list-04' },
            { text: 'Koenigsegg CCR', id: 'list-05' },
            { text: 'McLaren F1', id: 'list-06' },
            { text: 'Aston Martin One- 77', id: 'list-07' },
            { text: 'Jaguar XJ220', id: 'list-08' },
            { text: 'McLaren P1', id: 'list-09' },
            { text: 'Ferrari LaFerrari', id: 'list-10' },
        ];
    }
    render() {
        return (<form>
      <ListBoxComponent dataSource={this.data}/>
      <ButtonComponent isPrimary="true" content="Submit"></ButtonComponent>
    </form>);
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));