How to use angular multi select dropdown step by step

In Angular, you can create a multi-select dropdown using various libraries or by implementing a custom solution. One popular library for this purpose is ‘ng-multiselect-dropdown’. Here’s a step-by-step guide on how to use it:

Step 1: Install the library

Install the ‘ng-multiselect-dropdown’ library using npm:

npm install ng-multiselect-dropdown

Step 2: Import the module

Import the ‘NgMultiSelectDropDownModule’ in your Angular module (typically ‘app.module.ts’):

// app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { NgMultiSelectDropDownModule } from 'ng-multiselect-dropdown';

import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    NgMultiSelectDropDownModule.forRoot()
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Step 3: Use the component in your template

Use the ‘ng-multiselect-dropdown’ component in your template. For example, if you want to create a multi-select dropdown for a list of items:

Step 4: Define your data and settings in the component

In your component (e.g., ‘app.component.ts’), define the list of items, selected items, and dropdown settings:

// app.component.ts

import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  dropdownList = [];
  selectedItems = [];
  dropdownSettings = {};

  constructor() {
    this.dropdownList = [
      { item_id: 1, item_text: 'Item 1' },
      { item_id: 2, item_text: 'Item 2' },
      // Add more items as needed
    ];

    this.selectedItems = [
      // Set default selected items if needed
    ];

    this.dropdownSettings = {
      singleSelection: false,
      idField: 'item_id',
      textField: 'item_text',
      selectAllText: 'Select All',
      unSelectAllText: 'Unselect All',
      allowSearchFilter: true
    };
  }
}

Make sure to adjust the data and settings based on your specific requirements.

Step 5: Styling (Optional)

You can apply custom styles to the dropdown by using CSS. Customize the styles in your component’s CSS file.

Step 6: Run your Angular application

Run your Angular application using the ng serve command and navigate to the appropriate URL in your browser. You should see the multi-select dropdown in action.

Remember to check the documentation of ng-multiselect-dropdown for any additional features or customization options: ng-multiselect-dropdown GitHub