Change hierarchy grid icon in EJ2 TypeScript Grid control

3 Feb 20245 minutes to read

You can change default expand/collapse icon of the Hierarchy Grid by using custom Css.

You can change the content code of the corresponding icon which you want.

To use hierarchical binding, inject the DetailRow module in the grid.

Css:

Use the below css in your index.html file.

    .e-grid .e-icon-grightarrow::before,
        .e-grid-menu .e-icon-grightarrow::before {
            content: '\e7f9';
        }
    .e-grid .e-icon-gdownarrow::before,
        .e-grid-menu .e-icon-gdownarrow::before {
            content: '\e934';
        }

In this below demo, we have changed the expand/collapse icon to Plus/Minus icon.

index.ts
index.html
import { Grid, DetailRow } from '@syncfusion/ej2-grids';
import { data } from './datasource.ts';
import { employeeData } from './employeeData.ts';

Grid.Inject(DetailRow);

let grid: Grid = new Grid({
    dataSource: employeeData,
    columns: [
        { field: 'EmployeeID', headerText: 'Employee ID', textAlign: 'Right', width: 120 },
        { field: 'FirstName', headerText: 'First Name', width: 150 },
        { field: 'City', headerText: 'City', width: 150 },
        { field: 'Country', headerText: 'Country', width: 150 }
    ],
    childGrid: {
        dataSource: data,
        queryString: 'EmployeeID',
        columns: [
            { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 120 },
            { field: 'CustomerID', headerText: 'Customer ID', width: 150 },
            { field: 'ShipCity', headerText: 'Ship City', width: 150 },
            { field: 'ShipName', headerText: 'Ship Name', width: 150 }
        ],
    },
    height: 315
});
grid.appendTo('#Grid');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript Grid Control" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-grids/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-calendars/styles/material.css" rel="stylesheet" />
    
    
    
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-splitbuttons/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>
        .e-grid .e-icon-grightarrow::before,
        .e-grid-menu .e-icon-grightarrow::before {
            content: '\e7f9';
        }
    
        .e-grid .e-icon-gdownarrow::before,
        .e-grid-menu .e-icon-gdownarrow::before {
            content: '\e934';
        }
    </style>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='Grid'></div>        
    </div>
</body>
</html>