👀 Views: 34 💬 Answers: 1 📅 Created: 2025-08-21

angular change-detection viewcontainerref dynamic-components TypeScript

I'm experimenting with I can't seem to get I recently switched to I'm sure I'm missing something obvious here, but I've been banging my head against this for hours... I'm relatively new to this, so bear with me. I'm facing a problem with change detection in Angular 15 when dynamically loading components using `ViewContainerRef`. I have a scenario where I dynamically create components based on user input, but the data bindings within these components are not updating as expected. For instance, I've defined a component like this: ```typescript import { Component, Input } from '@angular/core'; @Component({ selector: 'app-dynamic-component', template: `<div>{{ data }}</div>` }) export class DynamicComponent { @Input() data: string; } ``` In my main component, I am trying to load this dynamic component based on a user action: ```typescript import { Component, ViewChild, ViewContainerRef, ComponentFactoryResolver } from '@angular/core'; import { DynamicComponent } from './dynamic.component'; @Component({ selector: 'app-main', template: `<button (click)='loadComponent()'>Load Component</button> <ng-template #dynamicContainer></ng-template>` }) export class MainComponent { @ViewChild('dynamicContainer', { read: ViewContainerRef }) dynamicContainer: ViewContainerRef; constructor(private componentFactoryResolver: ComponentFactoryResolver) { } loadComponent() { const componentFactory = this.componentFactoryResolver.resolveComponentFactory(DynamicComponent); const componentRef = this.dynamicContainer.createComponent(componentFactory); componentRef.instance.data = 'Hello World'; } } ``` After the component is loaded, I'm trying to update the `data` property again based on another event: ```typescript updateData() { const componentRef = this.dynamicContainer.get(0); if (componentRef) { componentRef.instance.data = 'Updated Data'; } } ``` However, the view does not seem to reflect this change. I've tried manually triggering change detection using `ChangeDetectorRef`, but that did not resolve the issue. When I inspect the `componentRef.instance.data`, it shows the updated value, but the view remains unchanged. I also checked if the component is still in the view hierarchy, which it is. Is there something I'm missing regarding change detection when dynamically creating components? How can I ensure that my dynamically loaded components reflect the updated data as expected? Thanks in advance! I appreciate any insights! Is this even possible? What's the correct way to implement this? This is my first time working with Typescript 3.10. Could someone point me to the right documentation?