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Tree List

Column Resizing

The TreeList sets the same width for all columns, but you can change column widths as described below:

Specify Custom Column Widths

You can set custom widths for all or individual columns. Individual settings override common settings. Use the following properties to specify the widths:

Auto-Adjust Column Widths to Content

In this demo, columns adjust their widths to the content. To enable this feature, set the columnAutoWidth property to true.

Allow Users to Resize Columns

Users can resize columns if the allowColumnResizing property is enabled. When a user resizes a column, the TreeList's behavior depends on the columnResizingMode property value:

  • "nextColumn"
    The TreeList resizes the adjacent column; the total component width does not change.

  • "widget"
    The total component width increases or decreases; all other columns maintain their widths.

Use the drop-down list below the TreeList to try both values.

If you do not want users to resize a specific column, disable its allowResizing property.

Backend API
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import React from 'react'; import { TreeList, Column } from 'devextreme-react/tree-list'; import { SelectBox } from 'devextreme-react/select-box'; import { employees } from './data.js'; const resizingModes = ['nextColumn', 'widget']; const expandedRowKeys = [1, 3, 6]; class App extends React.Component { constructor(props) { super(props); this.state = { columnResizingMode: 'nextColumn' }; this.onResizingModeChanged = this.onResizingModeChanged.bind(this); } render() { const { columnResizingMode } = this.state; return ( <div> <TreeList id="employees" dataSource={employees} allowColumnResizing={true} columnResizingMode={columnResizingMode} columnMinWidth={50} columnAutoWidth={true} showRowLines={true} showBorders={true} defaultExpandedRowKeys={expandedRowKeys} keyExpr="ID" parentIdExpr="Head_ID" > <Column dataField="Title" caption="Position" /> <Column dataField="Full_Name" /> <Column dataField="City" /> <Column dataField="State" /> <Column dataField="Hire_Date" dataType="date" /> </TreeList> <div className="options"> <div className="caption">Options</div> <div className="option"> <span>Column resizing mode:</span> <SelectBox items={resizingModes} value={columnResizingMode} width={250} onValueChanged={this.onResizingModeChanged} /> </div> </div> </div> ); } onResizingModeChanged(e) { this.setState({ columnResizingMode: e.value }); } } export default App;
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render( <App />, document.getElementById('app') );
<!DOCTYPE html> <html> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/css/dx.light.css" /> <link rel="stylesheet" type ="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import('./index.js'); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>
#employees { max-height: 307px; } .options { padding: 20px; margin-top: 20px; background-color: rgba(191, 191, 191, 0.15); position: absolute; bottom: 0px; width: 100%; } .caption { font-weight: 500; font-size: 18px; } .option { margin-top: 10px; } .option > span { position: relative; top: 2px; margin-right: 10px; } .option > .dx-widget { display: inline-block; vertical-align: middle; }
export const employees = [{ 'ID': 1, 'Head_ID': 0, 'Full_Name': 'John Heart', 'Prefix': 'Mr.', 'Title': 'CEO', 'City': 'Los Angeles', 'State': 'California', 'Email': 'jheart@dx-email.com', 'Skype': 'jheart_DX_skype', 'Mobile_Phone': '(213) 555-9392', 'Birth_Date': '1964-03-16', 'Hire_Date': '1995-01-15' }, { 'ID': 2, 'Head_ID': 1, 'Full_Name': 'Samantha Bright', 'Prefix': 'Dr.', 'Title': 'COO', 'City': 'Los Angeles', 'State': 'California', 'Email': 'samanthab@dx-email.com', 'Skype': 'samanthab_DX_skype', 'Mobile_Phone': '(213) 555-2858', 'Birth_Date': '1966-05-02', 'Hire_Date': '2004-05-24' }, { 'ID': 3, 'Head_ID': 1, 'Full_Name': 'Arthur Miller', 'Prefix': 'Mr.', 'Title': 'CTO', 'City': 'Denver', 'State': 'Colorado', 'Email': 'arthurm@dx-email.com', 'Skype': 'arthurm_DX_skype', 'Mobile_Phone': '(310) 555-8583', 'Birth_Date': '1972-07-11', 'Hire_Date': '2007-12-18' }, { 'ID': 4, 'Head_ID': 1, 'Full_Name': 'Robert Reagan', 'Prefix': 'Mr.', 'Title': 'CMO', 'City': 'Bentonville', 'State': 'Arkansas', 'Email': 'robertr@dx-email.com', 'Skype': 'robertr_DX_skype', 'Mobile_Phone': '(818) 555-2387', 'Birth_Date': '1974-09-07', 'Hire_Date': '2002-11-08' }, { 'ID': 5, 'Head_ID': 1, 'Full_Name': 'Greta Sims', 'Prefix': 'Ms.', 'Title': 'HR Manager', 'City': 'Atlanta', 'State': 'Georgia', 'Email': 'gretas@dx-email.com', 'Skype': 'gretas_DX_skype', 'Mobile_Phone': '(818) 555-6546', 'Birth_Date': '1977-11-22', 'Hire_Date': '1998-04-23' }, { 'ID': 6, 'Head_ID': 3, 'Full_Name': 'Brett Wade', 'Prefix': 'Mr.', 'Title': 'IT Manager', 'City': 'Reno', 'State': 'Nevada', 'Email': 'brettw@dx-email.com', 'Skype': 'brettw_DX_skype', 'Mobile_Phone': '(626) 555-0358', 'Birth_Date': '1968-12-01', 'Hire_Date': '2009-03-06' }, { 'ID': 7, 'Head_ID': 5, 'Full_Name': 'Sandra Johnson', 'Prefix': 'Mrs.', 'Title': 'Controller', 'City': 'Beaver', 'State': 'Utah', 'Email': 'sandraj@dx-email.com', 'Skype': 'sandraj_DX_skype', 'Mobile_Phone': '(562) 555-2082', 'Birth_Date': '1974-11-15', 'Hire_Date': '2005-05-11' }, { 'ID': 8, 'Head_ID': 4, 'Full_Name': 'Ed Holmes', 'Prefix': 'Dr.', 'Title': 'Sales Manager', 'City': 'Malibu', 'State': 'California', 'Email': 'edwardh@dx-email.com', 'Skype': 'edwardh_DX_skype', 'Mobile_Phone': '(310) 555-1288', 'Birth_Date': '1973-07-14', 'Hire_Date': '2005-06-19' }, { 'ID': 9, 'Head_ID': 3, 'Full_Name': 'Barb Banks', 'Prefix': 'Mrs.', 'Title': 'Support Manager', 'City': 'Phoenix', 'State': 'Arizona', 'Email': 'barbarab@dx-email.com', 'Skype': 'barbarab_DX_skype', 'Mobile_Phone': '(310) 555-3355', 'Birth_Date': '1979-04-14', 'Hire_Date': '2002-08-07' }, { 'ID': 10, 'Head_ID': 2, 'Full_Name': 'Kevin Carter', 'Prefix': 'Mr.', 'Title': 'Shipping Manager', 'City': 'San Diego', 'State': 'California', 'Email': 'kevinc@dx-email.com', 'Skype': 'kevinc_DX_skype', 'Mobile_Phone': '(213) 555-2840', 'Birth_Date': '1978-01-09', 'Hire_Date': '2009-08-11' }, { 'ID': 11, 'Head_ID': 5, 'Full_Name': 'Cindy Stanwick', 'Prefix': 'Ms.', 'Title': 'HR Assistant', 'City': 'Little Rock', 'State': 'Arkansas', 'Email': 'cindys@dx-email.com', 'Skype': 'cindys_DX_skype', 'Mobile_Phone': '(818) 555-6655', 'Birth_Date': '1985-06-05', 'Hire_Date': '2008-03-24' }, { 'ID': 12, 'Head_ID': 8, 'Full_Name': 'Sammy Hill', 'Prefix': 'Mr.', 'Title': 'Sales Assistant', 'City': 'Pasadena', 'State': 'California', 'Email': 'sammyh@dx-email.com', 'Skype': 'sammyh_DX_skype', 'Mobile_Phone': '(626) 555-7292', 'Birth_Date': '1984-02-17', 'Hire_Date': '2012-02-01' }, { 'ID': 13, 'Head_ID': 10, 'Full_Name': 'Davey Jones', 'Prefix': 'Mr.', 'Title': 'Shipping Assistant', 'City': 'Pasadena', 'State': 'California', 'Email': 'davidj@dx-email.com', 'Skype': 'davidj_DX_skype', 'Mobile_Phone': '(626) 555-0281', 'Birth_Date': '1983-03-06', 'Hire_Date': '2011-04-24' }, { 'ID': 14, 'Head_ID': 10, 'Full_Name': 'Victor Norris', 'Prefix': 'Mr.', 'Title': 'Shipping Assistant', 'City': 'Little Rock', 'State': 'Arkansas', 'Email': 'victorn@dx-email.com', 'Skype': 'victorn_DX_skype', 'Mobile_Phone': '(213) 555-9278', 'Birth_Date': '1986-07-23', 'Hire_Date': '2012-07-23' }, { 'ID': 15, 'Head_ID': 10, 'Full_Name': 'Mary Stern', 'Prefix': 'Ms.', 'Title': 'Shipping Assistant', 'City': 'Beaver', 'State': 'Utah', 'Email': 'marys@dx-email.com', 'Skype': 'marys_DX_skype', 'Mobile_Phone': '(818) 555-7857', 'Birth_Date': '1982-04-08', 'Hire_Date': '2012-08-12' }, { 'ID': 16, 'Head_ID': 10, 'Full_Name': 'Robin Cosworth', 'Prefix': 'Mrs.', 'Title': 'Shipping Assistant', 'City': 'Los Angeles', 'State': 'California', 'Email': 'robinc@dx-email.com', 'Skype': 'robinc_DX_skype', 'Mobile_Phone': '(818) 555-0942', 'Birth_Date': '1981-06-12', 'Hire_Date': '2012-09-01' }, { 'ID': 17, 'Head_ID': 9, 'Full_Name': 'Kelly Rodriguez', 'Prefix': 'Ms.', 'Title': 'Support Assistant', 'City': 'Boise', 'State': 'Idaho', 'Email': 'kellyr@dx-email.com', 'Skype': 'kellyr_DX_skype', 'Mobile_Phone': '(818) 555-9248', 'Birth_Date': '1988-05-11', 'Hire_Date': '2012-10-13' }, { 'ID': 18, 'Head_ID': 9, 'Full_Name': 'James Anderson', 'Prefix': 'Mr.', 'Title': 'Support Assistant', 'City': 'Atlanta', 'State': 'Georgia', 'Email': 'jamesa@dx-email.com', 'Skype': 'jamesa_DX_skype', 'Mobile_Phone': '(323) 555-4702', 'Birth_Date': '1987-01-29', 'Hire_Date': '2012-10-18' }, { 'ID': 19, 'Head_ID': 9, 'Full_Name': 'Antony Remmen', 'Prefix': 'Mr.', 'Title': 'Support Assistant', 'City': 'Boise', 'State': 'Idaho', 'Email': 'anthonyr@dx-email.com', 'Skype': 'anthonyr_DX_skype', 'Mobile_Phone': '(310) 555-6625', 'Birth_Date': '1986-02-19', 'Hire_Date': '2013-01-19' }, { 'ID': 20, 'Head_ID': 8, 'Full_Name': 'Olivia Peyton', 'Prefix': 'Mrs.', 'Title': 'Sales Assistant', 'City': 'Atlanta', 'State': 'Georgia', 'Email': 'oliviap@dx-email.com', 'Skype': 'oliviap_DX_skype', 'Mobile_Phone': '(310) 555-2728', 'Birth_Date': '1981-06-03', 'Hire_Date': '2012-05-14' }, { 'ID': 21, 'Head_ID': 6, 'Full_Name': 'Taylor Riley', 'Prefix': 'Mr.', 'Title': 'Network Admin', 'City': 'San Jose', 'State': 'California', 'Email': 'taylorr@dx-email.com', 'Skype': 'taylorr_DX_skype', 'Mobile_Phone': '(310) 555-7276', 'Birth_Date': '1982-08-14', 'Hire_Date': '2012-04-14' }, { 'ID': 22, 'Head_ID': 6, 'Full_Name': 'Amelia Harper', 'Prefix': 'Mrs.', 'Title': 'Network Admin', 'City': 'Los Angeles', 'State': 'California', 'Email': 'ameliah@dx-email.com', 'Skype': 'ameliah_DX_skype', 'Mobile_Phone': '(213) 555-4276', 'Birth_Date': '1983-11-19', 'Hire_Date': '2011-02-10' }, { 'ID': 23, 'Head_ID': 6, 'Full_Name': 'Wally Hobbs', 'Prefix': 'Mr.', 'Title': 'Programmer', 'City': 'Chatsworth', 'State': 'California', 'Email': 'wallyh@dx-email.com', 'Skype': 'wallyh_DX_skype', 'Mobile_Phone': '(818) 555-8872', 'Birth_Date': '1984-12-24', 'Hire_Date': '2011-02-17' }, { 'ID': 24, 'Head_ID': 6, 'Full_Name': 'Brad Jameson', 'Prefix': 'Mr.', 'Title': 'Programmer', 'City': 'San Fernando', 'State': 'California', 'Email': 'bradleyj@dx-email.com', 'Skype': 'bradleyj_DX_skype', 'Mobile_Phone': '(818) 555-4646', 'Birth_Date': '1988-10-12', 'Hire_Date': '2011-03-02' }, { 'ID': 25, 'Head_ID': 6, 'Full_Name': 'Karen Goodson', 'Prefix': 'Miss', 'Title': 'Programmer', 'City': 'South Pasadena', 'State': 'California', 'Email': 'kareng@dx-email.com', 'Skype': 'kareng_DX_skype', 'Mobile_Phone': '(626) 555-0908', 'Birth_Date': '1987-04-26', 'Hire_Date': '2011-03-14' }, { 'ID': 26, 'Head_ID': 5, 'Full_Name': 'Marcus Orbison', 'Prefix': 'Mr.', 'Title': 'Travel Coordinator', 'City': 'Los Angeles', 'State': 'California', 'Email': 'marcuso@dx-email.com', 'Skype': 'marcuso_DX_skype', 'Mobile_Phone': '(213) 555-7098', 'Birth_Date': '1982-03-02', 'Hire_Date': '2005-05-19' }, { 'ID': 27, 'Head_ID': 5, 'Full_Name': 'Sandy Bright', 'Prefix': 'Ms.', 'Title': 'Benefits Coordinator', 'City': 'Denver', 'State': 'Colorado', 'Email': 'sandrab@dx-email.com', 'Skype': 'sandrab_DX_skype', 'Mobile_Phone': '(818) 555-0524', 'Birth_Date': '1983-09-11', 'Hire_Date': '2005-06-04' }, { 'ID': 28, 'Head_ID': 6, 'Full_Name': 'Morgan Kennedy', 'Prefix': 'Mrs.', 'Title': 'Graphic Designer', 'City': 'San Fernando Valley', 'State': 'California', 'Email': 'morgank@dx-email.com', 'Skype': 'morgank_DX_skype', 'Mobile_Phone': '(818) 555-8238', 'Birth_Date': '1984-07-17', 'Hire_Date': '2012-01-11' }, { 'ID': 29, 'Head_ID': 28, 'Full_Name': 'Violet Bailey', 'Prefix': 'Ms.', 'Title': 'Jr Graphic Designer', 'City': 'La Canada', 'State': 'California', 'Email': 'violetb@dx-email.com', 'Skype': 'violetb_DX_skype', 'Mobile_Phone': '(818) 555-2478', 'Birth_Date': '1985-06-10', 'Hire_Date': '2012-01-19' }, { 'ID': 30, 'Head_ID': 5, 'Full_Name': 'Ken Samuelson', 'Prefix': 'Dr.', 'Title': 'Ombudsman', 'City': 'St. Louis', 'State': 'Missouri', 'Email': 'kents@dx-email.com', 'Skype': 'kents_DX_skype', 'Mobile_Phone': '(562) 555-9282', 'Birth_Date': '1972-09-11', 'Hire_Date': '2009-04-22' }];
window.config = { transpiler: 'plugin-babel', meta: { 'devextreme/localization.js': { "esModule": true }, }, paths: { 'npm:': 'https://unpkg.com/' }, defaultExtension: 'js', map: { 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types@15.7.2/prop-types.js', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@21.1.6-build-21215-0313/cjs', 'devextreme-react': 'npm:devextreme-react@21.1.5', 'jszip': 'npm:jszip@3.7.0/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.3.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.1.25/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@3.0.4/dist/dx-gantt.js', '@devextreme/vdom': 'npm:@devextreme/vdom@1.2.2', 'inferno': 'npm:inferno@7.4.8/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat@7.4.8/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.8/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom@1.0.7/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.8/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.8/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class@7.4.8/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras@7.4.8/dist/inferno-extras.min.js', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js' }, packages: { 'devextreme': { defaultExtension: 'js' }, '@devextreme/vdom': { defaultExtension: 'js' }, 'devextreme-react': { main: 'index.js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, packageConfigPaths: [ "npm:@devextreme/*/package.json", ], babelOptions: { sourceMaps: false, stage0: true, react: true } }; System.config(window.config);