如何在angular2物料设计下拉列表中预选值？

import { Component, OnInit } from '@angular/core';
import { FormControl } from '@angular/forms';
import { MatSelectChange } from '@angular/material/select';

@Component({
  selector: 'app-your-component',
  templateUrl: './your-component.component.html',
  styleUrls: ['./your-component.component.css']
})
export class YourComponent implements OnInit {
  selectedValue = new FormControl('initialValue');
  
  // 其他相关代码...
}

<mat-form-field>
  <mat-label>选择项</mat-label>
  <mat-select [formControl]="selectedValue">
    <mat-option value="option1">选项1</mat-option>
    <mat-option value="option2">选项2</mat-option>
    <mat-option value="option3">选项3</mat-option>
  </mat-select>
</mat-form-field>

setSelectedValue(value: string) {
  this.selectedValue.setValue(value);
}