如何使用angular8上的按钮打开我的菜单

<button (click)="openMenu()">打开菜单</button>

import { Component } from '@angular/core';

@Component({
  selector: 'app-your-component',
  templateUrl: './your-component.component.html',
  styleUrls: ['./your-component.component.css']
})
export class YourComponent {
  openMenu() {
    // 打开菜单的逻辑
  }
}

import { Component, ViewChild } from '@angular/core';
import { MatMenuTrigger } from '@angular/material/menu';

@Component({
  selector: 'app-your-component',
  templateUrl: './your-component.component.html',
  styleUrls: ['./your-component.component.css']
})
export class YourComponent {
  @ViewChild(MatMenuTrigger) menuTrigger: MatMenuTrigger;

  openMenu() {
    this.menuTrigger.openMenu();
  }
}

<button (click)="openMenu()">打开菜单</button>
<mat-menu #menuTrigger="matMenu">
  <!-- 菜单内容 -->
</mat-menu>