如何在dropdownlist中填充后台数据，并在Angular中选择值？

export interface IData {
  id: number;
  name: string;
}

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs';
import { IData } from './data.interface';

@Injectable()
export class DataService {
  constructor(private http: HttpClient) {}

  getData(): Observable<IData[]> {
    return this.http.get<IData[]>('/api/data');
  }
}

import { Component, OnInit } from '@angular/core';
import { DataService } from './data.service';
import { IData } from './data.interface';

@Component({
  selector: 'app-root',
  template: `
    <select [(ngModel)]="selectedValue">
      <option *ngFor="let item of data" [value]="item.id">{{ item.name }}</option>
    </select>
  `,
})
export class AppComponent implements OnInit {
  data: IData[];
  selectedValue: number;

  constructor(private dataService: DataService) {}

  ngOnInit() {
    this.dataService.getData().subscribe((result) => {
      this.data = result;
    });
  }
}