TreeView with Search Bar
To add a search bar to the TreeView and customize the search functionality, do the following:
-
Set the searchEnabled property to true.
-
Use the searchMode property to specify whether items should contain (default), start with, or match the search string. In this example, you can switch between search modes in the drop-down menu.
-
Configure the searchExpr property to specify custom search fields. The default search field is text.
The TreeView uses the TextBox component as a search bar. To customize it, specify TextBox properties in the searchEditorOptions object.
We do not recommend that you enable search if the TreeView uses virtual mode or custom logic to load data on demand. In these cases, the TreeView may not have the full dataset, and the search results include only loaded nodes.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Thank you!
We appreciate your feedback.
We appreciate your feedback.
<dx-tree-view
#treeview
[items]="products"
[width]="500"
[searchEnabled]="true"
searchMode="contains"
></dx-tree-view>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<span>Search mode</span>
<dx-select-box
#searchMode
[items]="['contains', 'startsWith']"
[(value)]="treeview.searchMode">
</dx-select-box>
</div>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxTreeViewModule, DxSelectBoxModule } from 'devextreme-angular';
import { Product, 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 {
products: Product[];
currentItem: Product;
constructor(service: Service) {
this.products = service.getProducts();
this.currentItem = this.products[0];
}
selectItem(e) {
this.currentItem = e.itemData;
}
}
@NgModule({
imports: [
BrowserModule,
DxTreeViewModule,
DxSelectBoxModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #treeview {
height: 400px;
}
::ng-deep .options {
padding: 20px;
position: absolute;
bottom: 0;
right: 0;
width: 260px;
top: 0;
background-color: #f5f5f5;
}
::ng-deep .caption {
font-size: 18px;
font-weight: 500;
}
::ng-deep .option {
margin-top: 10px;
}
::ng-deep .option > .dx-selectbox {
display: inline-block;
vertical-align: middle;
max-width: 350px;
width: 100%;
margin-top: 5px;
}
import { Injectable } from '@angular/core';
export class Product {
id: string;
text: string;
expanded?: boolean;
items?: Product[];
price?: number;
}
var products: Product[] = [{
id: "1",
text: "Stores",
expanded: true,
items: [{
id: "1_1",
text: "Super Mart of the West",
expanded: true,
items: [{
id: "1_1_1",
text: "Video Players",
items: [{
id: "1_1_1_1",
text: "HD Video Player",
price: 220
}, {
id: "1_1_1_2",
text: "SuperHD Video Player",
price: 270
}]
}, {
id: "1_1_2",
text: "Televisions",
items: [{
id: "1_1_2_1",
text: "SuperLCD 42",
price: 1200
}, {
id: "1_1_2_2",
text: "SuperLED 42",
price: 1450
}, {
id: "1_1_2_3",
text: "SuperLED 50",
price: 1600
}, {
id: "1_1_2_4",
text: "SuperLCD 55",
price: 1350
}, {
id: "1_1_2_5",
text: "SuperLCD 70",
price: 4000
}]
}, {
id: "1_1_3",
text: "Monitors",
items: [{
id: "1_1_3_1",
text: "19\"",
items: [{
id: "1_1_3_1_1",
text: "DesktopLCD 19",
price: 160
}]
}, {
id: "1_1_3_2",
text: "21\"",
items: [{
id: "1_1_3_2_1",
text: "DesktopLCD 21",
price: 170
}, {
id: "1_1_3_2_2",
text: "DesktopLED 21",
price: 175
}]
}]
}, {
id: "1_1_4",
text: "Projectors",
items: [{
id: "1_1_4_1",
text: "Projector Plus",
price: 550
}, {
id: "1_1_4_2",
text: "Projector PlusHD",
price: 750
}]
}]
}, {
id: "1_2",
text: "Braeburn",
items: [{
id: "1_2_1",
text: "Video Players",
items: [{
id: "1_2_1_1",
text: "HD Video Player",
price: 240
}, {
id: "1_2_1_2",
text: "SuperHD Video Player",
price: 300
}]
}, {
id: "1_2_2",
text: "Televisions",
items: [{
id: "1_2_2_1",
text: "SuperPlasma 50",
price: 1800
}, {
id: "1_2_2_2",
text: "SuperPlasma 65",
price: 3500
}]
}, {
id: "1_2_3",
text: "Monitors",
items: [{
id: "1_2_3_1",
text: "19\"",
items: [{
id: "1_2_3_1_1",
text: "DesktopLCD 19",
price: 170
}]
}, {
id: "1_2_3_2",
text: "21\"",
items: [{
id: "1_2_3_2_1",
text: "DesktopLCD 21",
price: 180
}, {
id: "1_2_3_2_2",
text: "DesktopLED 21",
price: 190
}]
}]
}]
}, {
id: "1_3",
text: "E-Mart",
items: [{
id: "1_3_1",
text: "Video Players",
items: [{
id: "1_3_1_1",
text: "HD Video Player",
price: 220
}, {
id: "1_3_1_2",
text: "SuperHD Video Player",
price: 275
}]
}, {
id: "1_3_3",
text: "Monitors",
items: [{
id: "1_3_3_1",
text: "19\"",
items: [{
id: "1_3_3_1_1",
text: "DesktopLCD 19",
price: 165
}]
}, {
id: "1_3_3_2",
text: "21\"",
items: [{
id: "1_3_3_2_1",
text: "DesktopLCD 21",
price: 175
}]
}]
}]
}, {
id: "1_4",
text: "Walters",
items: [{
id: "1_4_1",
text: "Video Players",
items: [{
id: "1_4_1_1",
text: "HD Video Player",
price: 210
}, {
id: "1_4_1_2",
text: "SuperHD Video Player",
price: 250
}]
}, {
id: "1_4_2",
text: "Televisions",
items: [{
id: "1_4_2_1",
text: "SuperLCD 42",
price: 1100
}, {
id: "1_4_2_2",
text: "SuperLED 42",
price: 1400
}, {
id: "1_4_2_3",
text: "SuperLED 50",
price: 1500
}, {
id: "1_4_2_4",
text: "SuperLCD 55",
price: 1300
}, {
id: "1_4_2_5",
text: "SuperLCD 70",
price: 4000
}, {
id: "1_4_2_6",
text: "SuperPlasma 50",
price: 1700
}]
}, {
id: "1_4_3",
text: "Monitors",
items: [{
id: "1_4_3_1",
text: "19\"",
items: [{
id: "1_4_3_1_1",
text: "DesktopLCD 19",
price: 160
}]
}, {
id: "1_4_3_2",
text: "21\"",
items: [{
id: "1_4_3_2_1",
text: "DesktopLCD 21",
price: 170
}, {
id: "1_4_3_2_2",
text: "DesktopLED 21",
price: 180
}]
}]
}, {
id: "1_4_4",
text: "Projectors",
items: [{
id: "1_4_4_1",
text: "Projector Plus",
price: 550
}, {
id: "1_4_4_2",
text: "Projector PlusHD",
price: 750
}]
}]
}]
}];
@Injectable()
export class Service {
getProducts(): Product[] {
return products;
}
}
// 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/
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: "system",
emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
'typescript': {
"exports": "ts"
},
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@3.5.3/lib/typescript.js',
'@angular': 'npm:@angular',
'tslib': 'npm:tslib@2.3.0/tslib.js',
'rxjs': 'npm:rxjs@6.4.0',
'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@21.1.5/cjs',
'devextreme/bundles/dx.all': 'npm:devextreme@21.1.5/bundles/dx.all.js',
'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',
'devexpress-gantt': 'npm:devexpress-gantt@3.0.4',
'devextreme-angular': 'npm:devextreme-angular@21.1.5',
'@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'
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts'
},
'devextreme': {
defaultExtension: 'js'
},
'@devextreme/vdom': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
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},
packageConfigPaths: [
"npm:@devextreme/*/package.json",
"npm:@angular/*/package.json",
"npm:@angular/common/*/package.json",
"npm:rxjs/package.json",
"npm:rxjs/operators/package.json",
"npm:devextreme-angular/*/package.json",
"npm:devextreme-angular/ui/*/package.json",
"npm:devextreme-angular/package.json",
"npm:devexpress-diagram/package.json",
"npm:devexpress-gantt/package.json",
]
};
System.config(window.config);
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<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" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.10.3/dist/zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3/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>