Tag Count Limitation
Documentation
You can use the maxDisplayedTags property to limit the number of displayed tags. When the specified limit is exceeded, the tags are combined into a single multi-tag that displays the number of selected items. Use the showMultiTagOnly property to specify whether to display a multi-tag only or other tags as well. You can also use onMultiTagPreparing event handler to customize the multi-tag, as shown in the second example.
Feel free to share demo-related thoughts here.
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If you have technical questions, please create a support ticket in the DevExpress Support Center.
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<div>
<div class="dx-fieldset">
<div class="dx-field">
<div class="dx-field-label"> Multi-tag for several items </div>
<div class="dx-field-value">
<dx-tag-box
[items]="products"
[value]="[1, 2, 3, 4]"
displayExpr="Name"
valueExpr="Id"
[showSelectionControls]="true"
selectAllMode="allPages"
[maxDisplayedTags]="3"
[inputAttr]="{ 'aria-label': 'Product' }"
></dx-tag-box>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label"> Multi-tag for all items </div>
<div class="dx-field-value">
<dx-tag-box
[items]="slicedProducts"
[value]="[1, 2, 3, 4, 5]"
displayExpr="Name"
valueExpr="Id"
[showSelectionControls]="true"
(onMultiTagPreparing)="onMultiTagPreparing($event)"
[maxDisplayedTags]="3"
[inputAttr]="{ 'aria-label': 'Product' }"
></dx-tag-box>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label"> Multi-tag with ordinary tags </div>
<div class="dx-field-value">
<dx-tag-box
[items]="products"
[value]="[1, 2, 3, 4, 5, 6, 7]"
displayExpr="Name"
valueExpr="Id"
[showSelectionControls]="true"
selectAllMode="allPages"
[maxDisplayedTags]="2"
[showMultiTagOnly]="false"
[inputAttr]="{ 'aria-label': 'Product' }"
></dx-tag-box>
</div>
</div>
</div>
</div>
import { Component, NgModule, enableProdMode } from '@angular/core';
import { BrowserModule, BrowserTransferStateModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxTagBoxModule } from 'devextreme-angular';
import DataSource from 'devextreme/data/data_source';
import { Product, Service } from './app.service';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
providers: [Service],
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css'],
})
export class AppComponent {
products: Product[];
slicedProducts: Product[];
constructor(service: Service) {
this.products = service.getProducts();
this.slicedProducts = this.products.slice(0, 5);
}
onMultiTagPreparing(args) {
const selectedItemsLength = args.selectedItems.length;
const totalCount = 5;
if (selectedItemsLength < totalCount) {
args.cancel = true;
} else {
args.text = `All selected (${selectedItemsLength})`;
}
}
}
@NgModule({
imports: [
BrowserModule,
BrowserTransferStateModule,
DxTagBoxModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep .dx-field {
margin-bottom: 50px;
}
import { Injectable } from '@angular/core';
export class Product {
Id: number;
Name: string;
Price: number;
Current_Inventory: number;
Backorder: number;
Manufacturing: number;
Category: string;
ImageSrc: string;
}
const products: Product[] = [{
Id: 1,
Name: 'HD Video Player',
Price: 330,
Current_Inventory: 225,
Backorder: 0,
Manufacturing: 10,
Category: 'Video Players',
ImageSrc: '../../../../images/products/1.png',
}, {
Id: 2,
Name: 'SuperHD Video Player',
Price: 400,
Current_Inventory: 150,
Backorder: 0,
Manufacturing: 25,
Category: 'Video Players',
ImageSrc: '../../../../images/products/2.png',
}, {
Id: 3,
Name: 'SuperPlasma 50',
Price: 2400,
Current_Inventory: 0,
Backorder: 0,
Manufacturing: 0,
Category: 'Televisions',
ImageSrc: '../../../../images/products/3.png',
}, {
Id: 4,
Name: 'SuperLED 50',
Price: 1600,
Current_Inventory: 77,
Backorder: 0,
Manufacturing: 55,
Category: 'Televisions',
ImageSrc: '../../../../images/products/4.png',
}, {
Id: 5,
Name: 'SuperLED 42',
Price: 1450,
Current_Inventory: 445,
Backorder: 0,
Manufacturing: 0,
Category: 'Televisions',
ImageSrc: '../../../../images/products/5.png',
}, {
Id: 6,
Name: 'SuperLCD 55',
Price: 1350,
Current_Inventory: 345,
Backorder: 0,
Manufacturing: 5,
Category: 'Televisions',
ImageSrc: '../../../../images/products/6.png',
}, {
Id: 7,
Name: 'SuperLCD 42',
Price: 1200,
Current_Inventory: 210,
Backorder: 0,
Manufacturing: 20,
Category: 'Televisions',
ImageSrc: '../../../../images/products/7.png',
}, {
Id: 8,
Name: 'SuperPlasma 65',
Price: 3500,
Current_Inventory: 0,
Backorder: 0,
Manufacturing: 0,
Category: 'Televisions',
ImageSrc: '../../../../images/products/8.png',
}, {
Id: 9,
Name: 'SuperLCD 70',
Price: 4000,
Current_Inventory: 95,
Backorder: 0,
Manufacturing: 5,
Category: 'Televisions',
ImageSrc: '../../../../images/products/9.png',
}, {
Id: 10,
Name: 'DesktopLED 21',
Price: 175,
Current_Inventory: null,
Backorder: 425,
Manufacturing: 75,
Category: 'Monitors',
ImageSrc: '../../../../images/products/10.png',
}, {
Id: 12,
Name: 'DesktopLCD 21',
Price: 170,
Current_Inventory: 210,
Backorder: 0,
Manufacturing: 60,
Category: 'Monitors',
ImageSrc: '../../../../images/products/12.png',
}, {
Id: 13,
Name: 'DesktopLCD 19',
Price: 160,
Current_Inventory: 150,
Backorder: 0,
Manufacturing: 210,
Category: 'Monitors',
ImageSrc: '../../../../images/products/13.png',
}, {
Id: 14,
Name: 'Projector Plus',
Price: 550,
Current_Inventory: null,
Backorder: 55,
Manufacturing: 10,
Category: 'Projectors',
ImageSrc: '../../../../images/products/14.png',
}, {
Id: 15,
Name: 'Projector PlusHD',
Price: 750,
Current_Inventory: 110,
Backorder: 0,
Manufacturing: 90,
Category: 'Projectors',
ImageSrc: '../../../../images/products/15.png',
}, {
Id: 16,
Name: 'Projector PlusHT',
Price: 1050,
Current_Inventory: 0,
Backorder: 75,
Manufacturing: 57,
Category: 'Projectors',
ImageSrc: '../../../../images/products/16.png',
}, {
Id: 17,
Name: 'ExcelRemote IR',
Price: 150,
Current_Inventory: 650,
Backorder: 0,
Manufacturing: 190,
Category: 'Automation',
ImageSrc: '../../../../images/products/17.png',
}, {
Id: 18,
Name: 'ExcelRemote Bluetooth',
Price: 180,
Current_Inventory: 310,
Backorder: 0,
Manufacturing: 0,
Category: 'Automation',
ImageSrc: '../../../../images/products/18.png',
}, {
Id: 19,
Name: 'ExcelRemote IP',
Price: 200,
Current_Inventory: 0,
Backorder: 325,
Manufacturing: 225,
Category: 'Automation',
ImageSrc: '../../../../images/products/19.png',
},
];
@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@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'@angular/core': 'npm:@angular/core@12.2.17',
'@angular/platform-browser': 'npm:@angular/platform-browser@12.2.17',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@12.2.17',
'@angular/forms': 'npm:@angular/forms@12.2.17',
'@angular/common': 'npm:@angular/common@12.2.17',
'@angular/compiler': 'npm:@angular/compiler@12.2.17',
'tslib': 'npm:tslib@2.3.1/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',
'devextreme': 'npm:devextreme@23.1.5/cjs',
'devextreme/bundles/dx.all': 'npm:devextreme@23.1.5/bundles/dx.all.js',
'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.6.2/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.1',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.48',
'devextreme-angular': 'npm:devextreme-angular@23.1.5',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.11',
'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@2.8.4/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.4/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@3.0.11/inferno/package.json',
'npm:@angular/*/package.json',
'npm:@angular/common@12.2.17/*/package.json',
'npm:rxjs@7.5.3/package.json',
'npm:rxjs@7.5.3/operators/package.json',
'npm:devextreme-angular@23.1.5/*/package.json',
'npm:devextreme-angular@23.1.5/ui/*/package.json',
'npm:devextreme-angular@23.1.5/package.json',
'npm:devexpress-diagram@2.2.1/package.json',
'npm:devexpress-gantt@4.1.48/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/23.1.5/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@0.12.0/dist/zone.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>