如何显示在Angular 8中已经被销毁的动态组件？

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

@Component({
  selector: 'app-dynamic-component',
  template: '<ng-template #container></ng-template>'
})
export class DynamicComponent implements OnDestroy {
  @ViewChild('container', { read: ViewContainerRef }) container: ViewContainerRef;
  componentRef: ComponentRef<any>;

  constructor(private viewContainerRef: ViewContainerRef) {}

  createComponent() {
    this.componentRef = this.container.createComponent(componentFactory);
  }

  destroyComponent() {
    this.componentRef.destroy();
  }

  showDestroyedComponent() {
    this.viewContainerRef.insert(this.componentRef.hostView);
  }

  ngOnDestroy() {
    if (this.componentRef) {
      this.componentRef.destroy();
    }
  }
}