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Column Resizing in JavaScript Gantt control

08 Dec 2022 / 2 minutes to read

The column width can be resized by clicking and dragging the right edge of the column header. While dragging, the width of the column will be resized immediately. Each column can be auto resized by double-clicking the right edge of the column header to fit the width of that column based on the widest cell content. To resize the column, set the allowResizing property to true. The following code example shows how to enable the column resize feature in the Gantt control.

To resize the column, inject the Resize module into the Gantt control.

Source
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index.ts
index.html
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import { Gantt, Resize } from '@syncfusion/ej2-gantt';
import { GanttData } from 'datasource.ts';

Gantt.Inject(Resize);

let gantt: Gantt = new Gantt({
    dataSource: GanttData,
    allowResizing: true,
    taskFields: {
        id: 'TaskID',
        name: 'TaskName',
        startDate: 'StartDate',
        duration: 'Duration',
        progress: 'Progress',
        child: 'subtasks'
    },
    splitterSettings: {
        columnIndex: 4
    },
    height: '450px'
});
gantt.appendTo('#Gantt');
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<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript Gantt Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
	<link href="https://cdn.syncfusion.com/ej2/20.3.56/material.css" rel="stylesheet" type="text/css"/>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>


<body>
    
    <div id='loader'>Loading....</div>
    <div id="container">
        <div id="Gantt"></div>        
    </div>
</body></html>

You can disable resizing for a particular column by setting the columns.allowResizing to false.

Defining minimum and maximum column width

The column resizing can be restricted between minimum and maximum widths by defining the columns->minWidth and columns->maxWidth properties.

In the following example, the minimum and maximum widths are defined for the Duration, and Task Name columns.

Source
Preview
index.ts
index.html
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import { Gantt, Resize } from '@syncfusion/ej2-gantt';
import { GanttData } from 'datasource.ts';

Gantt.Inject(Resize);

let gantt: Gantt = new Gantt({
    dataSource: GanttData,
    allowResizing: true,
    taskFields: {
        id: 'TaskID',
        name: 'TaskName',
        startDate: 'StartDate',
        duration: 'Duration',
        progress: 'Progress',
        child: 'subtasks'
    },
    splitterSettings: {
        columnIndex: 5
    },
    height: '450px',
    columns: [
        { field: 'TaskID', headerText: 'Task ID', textAlign: 'Left', width: '100' },
        { field: 'TaskName', headerText: 'Task Name', width: '200', minWidth: '150', maxWidth: '250', },
        { field: 'StartDate', headerText: 'Start Date', width: '150' },
        { field: 'Duration', headerText: 'Duration', width: '100', minWidth: '50', maxWidth: '200' },
        { field: 'Progress', headerText: 'Progress', width: '150' }
    ]

});
gantt.appendTo('#Gantt');
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<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript Gantt Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
	<link href="https://cdn.syncfusion.com/ej2/20.3.56/material.css" rel="stylesheet" type="text/css"/>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>


<body>
    
    <div id='loader'>Loading....</div>
    <div id="container">
        <div id="Gantt"></div>        
    </div>
</body></html>