Dynamic Dropdown

To achieve dynamic dropdown options in an Angular Material Table, you can create a shared service to manage the dropdown options centrally. This service can be injected into components where the dropdown is used to fetch the dynamic options.

Create a service to manage the dropdown options:

import { Injectable } from '@angular/core';
import { BehaviorSubject } from 'rxjs';

@Injectable({
  providedIn: 'root'
})
export class DropdownService {
  private options = new BehaviorSubject(['Export to Excel', 'Export to CSV']);

  getOptions() {
    return this.options.asObservable();
  }

  addOption(newOption: string) {
    this.options.next([...this.options.getValue(), newOption]);
  }
}

In your component where the dropdown is used, inject the DropdownService and subscribe to the options:

export class YourComponent {
  options: string[];

  constructor(private dropdownService: DropdownService) {
    this.dropdownService.getOptions().subscribe(options => {
      this.options = options;
    });
  }
}

To add "Export to PDF" dynamically, call the addOption method in the service from any component:

this.dropdownService.addOption('Export to PDF');