如何在Angular中动态改变模板？

<div *ngIf="showTemplate">这是动态显示的模板</div>

<div [ngSwitch]="templateType">
  <div *ngSwitchCase="'type1'">这是类型1的模板</div>
  <div *ngSwitchCase="'type2'">这是类型2的模板</div>
  <div *ngSwitchDefault>这是默认的模板</div>
</div>

<ng-template #templateContainer></ng-template>
<button (click)="loadTemplate()">加载模板</button>
<button (click)="unloadTemplate()">卸载模板</button>

import { Component, ComponentFactoryResolver, ViewChild, ViewContainerRef } from '@angular/core';

@Component({
  selector: 'app-dynamic-template',
  template: `
    <ng-template #template1>这是动态加载的模板1</ng-template>
    <ng-template #template2>这是动态加载的模板2</ng-template>
  `
})
export class DynamicTemplateComponent {
  @ViewChild('templateContainer', { read: ViewContainerRef }) container: ViewContainerRef;
  @ViewChild('template1') template1: TemplateRef<any>;
  @ViewChild('template2') template2: TemplateRef<any>;

  constructor(private componentFactoryResolver: ComponentFactoryResolver) {}

  loadTemplate() {
    this.container.clear();
    const template = this.templateType === 'type1' ? this.template1 : this.template2;
    this.container.createEmbeddedView(template);
  }

  unloadTemplate() {
    this.container.clear();
  }
}