如何在Angular-7数据表中设置行id？

<table>
  <tr *ngFor="let item of items; let i = index" [id]="'row-' + i">
    <td>{{ item.name }}</td>
    <td>{{ item.age }}</td>
    <td>{{ item.gender }}</td>
  </tr>
</table>

export class DataTableComponent implements OnInit {
  items: any[] = [
    { name: 'John', age: 25, gender: 'Male' },
    { name: 'Jane', age: 30, gender: 'Female' },
    { name: 'Bob', age: 35, gender: 'Male' }
  ];

  constructor() { }

  ngOnInit() {
  }
}

<app-data-table></app-data-table>