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Angular Tree List - Row Editing

The TreeList allows users to edit data in multiple modes. This demo shows the "row" edit mode. To edit a row, click its "Edit" button. Only one row can be in the edit state at a time.

To enable row edit mode, set the mode property to "row" and enable the editing object's allowUpdating, allowAdding, and allowDeleting properties to allow edit operations.

Backend API
<div id="tree-list-demo"> <dx-tree-list id="employees" [dataSource]="employees" keyExpr="ID" parentIdExpr="Head_ID" [showRowLines]="true" [showBorders]="true" [columnAutoWidth]="true" [expandedRowKeys]="[1, 2, 3, 4, 5]" (onEditorPreparing)="editorPreparing($event)" (onInitNewRow)="initNewRow($event)" > <dxo-editing mode="row" [allowUpdating]="true" [allowDeleting]="allowDeleting" [allowAdding]="true" > </dxo-editing> <dxi-column dataField="Full_Name"> <dxi-validation-rule type="required"></dxi-validation-rule> </dxi-column> <dxi-column dataField="Head_ID" caption="Head"> <dxo-lookup [dataSource]="lookupData" valueExpr="ID" displayExpr="Full_Name" > </dxo-lookup> <dxi-validation-rule type="required"></dxi-validation-rule> </dxi-column> <dxi-column dataField="Title" caption="Position"> <dxi-validation-rule type="required"></dxi-validation-rule> </dxi-column> <dxi-column dataField="Hire_Date" dataType="date" [width]="120"> <dxi-validation-rule type="required"></dxi-validation-rule> </dxi-column> <dxi-column type="buttons"> <dxi-button name="edit"></dxi-button> <dxi-button name="delete"></dxi-button> </dxi-column> </dx-tree-list> </div>
import { NgModule, Component, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxTreeListModule, DxTreeListTypes } from 'devextreme-angular/ui/tree-list'; import { Employee, Service } from './app.service'; if (!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', templateUrl: `app/app.component.html`, styleUrls: [`app/app.component.css`], providers: [Service], }) export class AppComponent { employees: Employee[]; lookupData: { store: Employee[], sort: string, }; constructor(service: Service) { this.employees = service.getEmployees(); this.lookupData = { store: this.employees, sort: 'Full_Name', }; } editorPreparing(e: DxTreeListTypes.EditorPreparingEvent) { if (e.dataField === 'Head_ID' && e.row.data.ID === 1) { e.cancel = true; } } initNewRow(e: DxTreeListTypes.InitNewRowEvent) { e.data.Head_ID = 1; } allowDeleting = ({ row }) => row.data.ID !== 1; } @NgModule({ imports: [ BrowserModule, DxTreeListModule, ], declarations: [AppComponent], bootstrap: [AppComponent], }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #tree-list-demo { min-height: 700px; } ::ng-deep #employees { max-height: 700px; }
import { Injectable } from '@angular/core'; export class Employee { ID: number; Head_ID: number; Full_Name: string; Prefix: string; Title: string; City: string; State: string; Email: string; Skype: string; Mobile_Phone: string; Birth_Date: string; Hire_Date: string; } const employees: Employee[] = [{ 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', }]; @Injectable() export class Service { getEmployees(): Employee[] { return employees; } }
// In real applications, you should not transpile code in the browser. // You can see how to create your own application with Angular and DevExtreme here: // https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/ const componentNames = [ 'accordion', 'action-sheet', 'autocomplete', 'bar-gauge', 'box', 'bullet', 'button-group', 'button', 'calendar', 'chart', 'check-box', 'circular-gauge', 'color-box', 'context-menu', 'data-grid', 'date-box', 'date-range-box', 'defer-rendering', 'diagram', 'draggable', 'drawer', 'drop-down-box', 'drop-down-button', 'file-manager', 'file-uploader', 'filter-builder', 'form', 'funnel', 'gallery', 'gantt', 'html-editor', 'linear-gauge', 'list', 'load-indicator', 'load-panel', 'lookup', 'map', 'menu', 'multi-view', 'nested', 'number-box', 'pie-chart', 'pivot-grid-field-chooser', 'pivot-grid', 'polar-chart', 'popover', 'popup', 'progress-bar', 'radio-group', 'range-selector', 'range-slider', 'recurrence-editor', 'resizable', 'responsive-box', 'sankey', 'scheduler', 'scroll-view', 'select-box', 'slider', 'sortable', 'sparkline', 'speed-dial-action', 'splitter', 'switch', 'tab-panel', 'tabs', 'tag-box', 'text-area', 'text-box', 'tile-view', 'toast', 'toolbar', 'tooltip', 'tree-list', 'tree-map', 'tree-view', 'validation-group', 'validation-summary', 'validator', 'vector-map', ]; window.exports = window.exports || {}; window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, }, meta: { 'typescript': { 'exports': 'ts', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, '@angular/platform-browser-dynamic': { 'esModule': true, }, '@angular/platform-browser': { 'esModule': true, }, '@angular/core': { 'esModule': true, }, '@angular/common': { 'esModule': true, }, '@angular/common/http': { 'esModule': true, }, '@angular/compiler': { 'esModule': true, }, '@angular/animations': { 'esModule': true, }, '@angular/forms': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', 'bundles:': '../../../../bundles/', }, map: { 'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js', 'typescript': 'npm:typescript@4.2.4/lib/typescript.js', /* @angular */ '@angular/compiler': 'bundles:@angular/compiler.umd.js', '@angular/platform-browser-dynamic': 'bundles:@angular/platform-browser-dynamic.umd.js', '@angular/core': 'bundles:@angular/core.umd.js', '@angular/core/primitives/signals': 'bundles:@angular/core.primitives.signals.umd.js', '@angular/common': 'bundles:@angular/common.umd.js', '@angular/common/http': 'bundles:@angular/common-http.umd.js', '@angular/platform-browser': 'bundles:@angular/platform-browser.umd.js', '@angular/platform-browser/animations': 'bundles:@angular/platform-browser.umd.js', '@angular/forms': 'bundles:@angular/forms.umd.js', /* devextreme */ 'devextreme': 'npm:devextreme@24.1.6/cjs', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13', 'devextreme/bundles/dx.all': 'npm:devextreme@24.1.6/bundles/dx.all.js', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.11', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.56', /* devextreme-angular umd maps */ 'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js', 'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js', 'devextreme-angular/http': 'bundles:devextreme-angular/devextreme-angular-http.umd.js', ...componentNames.reduce((acc, name) => { acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`; return acc; }, {}), 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'tslib': 'npm:tslib@2.6.1/tslib.js', 'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js', 'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.js', 'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts', }, 'devextreme': { defaultExtension: 'js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, 'rxjs': { defaultExtension: 'js', }, 'rxjs/operators': { defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.13/inferno/package.json', 'npm:rxjs@7.5.3/package.json', 'npm:rxjs@7.5.3/operators/package.json', 'npm:devexpress-diagram@2.2.11/package.json', 'npm:devexpress-gantt@4.1.56/package.json', ], }; System.config(window.config); // System.import('@angular/compiler').catch(console.error.bind(console));
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" lang="en"> <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=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.6/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script> <script src="https://unpkg.com/zone.js@0.13.3/bundles/zone.umd.min.js"></script> <script src="https://unpkg.com/reflect-metadata@0.1.13/Reflect.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script src="config.js"></script> <script> System.import("app").catch(console.error.bind(console)); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <demo-app>Loading...</demo-app> </div> </body> </html>

Buttons for allowed edit operations are displayed in an edit column. To customize it programmatically, declare a column of the buttons type and specify the available buttons. In this demo, the buttons column is used to hide the "Add" button in each row. See the following help topic for more details on edit column customization: Customize the Edit Column.

This demo also illustrates the following event handlers:

  • onInitNewRow
    Populates cells of a new row with default values. In this demo, onInitNewRow sets John Heart as the initial Head for new rows.

  • onEditorPreparing
    Customizes cell editors. In this demo, this handler disallows users to edit the Head value of John Heart.

Refer to the following help topic to see the full list of the events that edit operations raise: Editing Events.