1 NPM Install

Install the smart-webcomponents-angular package:

npm install smart-webcomponents-angular

2 Register styles

Add the default Smart UI stylesheet to angular.json -> projects -> <your-project> -> architect -> build -> options -> styles (merge with existing entries):

"styles": [
		"node_modules/smart-webcomponents-angular/source/styles/smart.default.css"
	]

Add optional theme CSS from the same package after smart.default.css if you use Bootstrap, Fluent, or other bundled themes.

3 Import the Angular module

Import DropDownButtonModule from smart-webcomponents-angular/dropdownbutton: use @Component.imports for standalone, or add it to your AppModule (or feature module) imports array for NgModule apps.

import { DropDownButtonModule } from 'smart-webcomponents-angular/dropdownbutton';

4 Root component (standalone)

Add DropDownButtonModule to your root standalone component (src/app/app.ts). Snippet from Smart UI demos (paths normalized to app.html / App where applicable):

 import { Component, ViewChild, OnInit, AfterViewInit } from '@angular/core';
import { DropDownButtonComponent } from 'smart-webcomponents-angular/dropdownbutton';

import { DropDownButtonModule } from "smart-webcomponents-angular/dropdownbutton";

import { ListMenuModule } from "smart-webcomponents-angular/listmenu";

import { ButtonModule } from "smart-webcomponents-angular/button";

import { SwitchButtonModule } from "smart-webcomponents-angular/switchbutton";

import { CalendarModule } from "smart-webcomponents-angular/calendar";

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [CalendarModule, DropDownButtonModule, ListMenuModule, SwitchButtonModule],
  templateUrl: './app.html',
  styleUrl: './app.css'
})

export class App implements AfterViewInit, OnInit {
    @ViewChild('dropdownbutton', { read: DropDownButtonComponent, static: false }) dropdownbutton!: DropDownButtonComponent;
    @ViewChild('dropdownbutton2', { read: DropDownButtonComponent, static: false }) dropdownbutton2!: DropDownButtonComponent;
    @ViewChild('dropdownbutton3', { read: DropDownButtonComponent, static: false }) dropdownbutton3!: DropDownButtonComponent;
    @ViewChild('dropdownbutton4', { read: DropDownButtonComponent, static: false }) dropdownbutton4!: DropDownButtonComponent;


    ngOnInit(): void {
        // onInit code.
    }

    ngAfterViewInit(): void {
        // afterViewInit code.
        this.init();
    }

    init(): void {
        // init code.


        const listMenuDataSource = [
            {
                label: 'OSI',
                items: [
                    {
                        label: 'Application Layer',
                        items: [
                            { label: 'SIP' },
                            { label: 'DNS' },
                            { label: 'FTP' },
                            { label: 'RTP' },
                            { label: 'DHCP' }
                        ]
                    },
                    {
                        label: 'Presentation Layer',
                        items: [
                            { label: 'SSL' },
                            { label: 'TLS' }
                        ]
                    },
                    {
                        label: 'Session Layer',
                        items: [
                            { label: 'NetBIOS' },
                            { label: 'SPDY' }
                        ]
                    },
                    {
                        label: 'Transport Layer',
                        items: [
                            { label: 'TCP' },
                            { label: 'UDP' },
                            { label: 'SCTP' }
                        ]
                    },
                    {
                        label: 'Network Layer',
                        items: [
                            { label: 'IP' },
                            { label: 'ARP' },
                            { label: 'ICMP' }
                        ]
                    },
                    {
                        label: 'Data Link Layer',
                        items: [
                            { label: 'ATM' },
                            { label: 'SDLS' },
                            { label: 'LLC' }
                        ]
                    },
                    {
                        label: 'Physical Layer',
                        items: [
                            { label: 'EIA/TIA-232' },
                            { label: 'ITU-T V-Series' },
                            { label: 'DSL' }
                        ]
                    }
                ]
            },
            {
                label: 'TCP/IP',
                items: [
                    {
                        label: 'Application Layer',
                        items: [
                            { label: 'DHCP' },
                            { label: 'DNS' },
                            { label: 'FTP' },
                            { label: 'HTTP' },
                            { label: 'IMAP' },
                            { label: 'LDAP' },
                            { label: 'XMPP' },
                            { label: 'SSH' },
                            { label: 'RIP' }
                        ]
                    },
                    {
                        label: 'Transport Layer',
                        items: [
                            { label: 'TCP' },
                            { label: 'UDP' },
                            { label: 'SCTP' }
                        ]
                    },
                    {
                        label: 'Internet Layer',
                        items: [
                            { label: 'IP' },
                            { label: 'ICMP' },
                            { label: 'ECN' }
                        ]
                    },
                    {
                        label: 'Link Layer',
                        items: [
                            { label: 'ARP' },
                            { label: 'NDP' },
                            { label: 'DSL' }
                        ]
                    }
                ]
            }
        ];

        const listMenu = document.querySelector('smart-list-menu')
        
        if (listMenu) {
            listMenu.dataSource = listMenuDataSource;
        }

    }
}

Boot the app with bootstrapApplication from src/main.ts and an ApplicationConfig in src/app/app.config.ts as generated by the CLI.

5 Template (standalone)

Use your markup in src/app/app.html (or inline template). Bind properties and events on smart-drop-down-button as needed:

 <div class="demo-description">smartDropDownButton allows you to display any type of content in a Drop-down.</div>
<smart-drop-down-button
#dropdownbutton drop-down-width="auto" placeholder="Calendar">
    <smart-calendar></smart-calendar>
    </smart-drop-down-button>
    <smart-drop-down-button #dropdownbutton2 drop-down-width="auto" placeholder="ListMenu">
        <smart-list-menu></smart-list-menu>
    </smart-drop-down-button>
    <smart-drop-down-button #dropdownbutton3 placeholder="Buttons">
        <smart-button>Button</smart-button>
        <smart-switch-button>Switch Button</smart-switch-button>
    </smart-drop-down-button>
    <smart-drop-down-button #dropdownbutton4 placeholder="Text">What is Lorem Ipsum? Lorem Ipsum is simply dummy text of the printing
        and typesetting industry. Lorem Ipsum has been the industry's standard
        dummy text ever since the 1500s, when an unknown printer took a galley
        of type and scrambled it to make a type specimen book. It has survived
        not only five centuries, but also the leap into electronic typesetting,
        remaining essentially unchanged. It was popularised in the 1960s with the
        release of Letraset sheets containing Lorem Ipsum passages, and more recently
        with desktop publishing software like Aldus PageMaker including versions
        of Lorem Ipsum.</smart-drop-down-button>

6 NgModule bootstrap (also supported)

Same npm package and angular.json styles as steps 1-2. Put DropDownButtonModule on your NgModule.imports instead of @Component.imports, and bootstrap with bootstrapModule(AppModule).

The demo sources bundled for this widget use standalone only (there is no app.module.ts in that folder). NgModule is fully supported: put DropDownButtonModule from smart-webcomponents-angular/dropdownbutton on NgModule.imports, make your root component non-standalone (remove standalone: true and move widget modules from @Component.imports to the module), and bootstrap with platformBrowserDynamic().bootstrapModule(AppModule).

Minimal main.ts + app.module.ts pairing (adjust paths to match your CLI layout):

src/main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app/app.module';

platformBrowserDynamic().bootstrapModule(AppModule).catch((err) => console.error(err));

src/app/app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { DropDownButtonModule } from 'smart-webcomponents-angular/dropdownbutton';

@NgModule({
	declarations: [ AppComponent ],
	imports: [ BrowserModule, DropDownButtonModule ],
	bootstrap: [ AppComponent ]
})
export class AppModule { }

Reuse the template and class logic from steps 4-5 in AppComponent, configured for declarations + NgModule.imports instead of a standalone @Component.