如何从angular material datepicker更改日期？

import { MatDatepickerInputEvent, MatDatepicker } from '@angular/material';

selectedDate: Date;

<mat-form-field>
  <input matInput [matDatepicker]="picker" [(ngModel)]="selectedDate" (dateChange)="onDateChange($event)">
  <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
  <mat-datepicker #picker></mat-datepicker>
</mat-form-field>

onDateChange(event: MatDatepickerInputEvent<Date>) {
  // 处理日期变化事件
  console.log(event.value); // 输出选择的日期
}