angular - 无法绑定(bind)到 'ngForOf'，因为它不是 Angular 9 中 'tr' 的已知属性

Question

ngFor在我的应用程序中不起作用。
我将我的应用程序拆分为单独的模块并包含 import { CommonModule } from '@angular/common';进入我的子模块和import { BrowserModule } from '@angular/platform-browser';进入我的app.modules.ts文件，但我仍然收到以下错误。

Can't bind to 'ngForOf' since it isn't a known property of 'tr'.

我曾尝试查看其他问题，但所有这些问题都只是对 include CommonModule 说的。 ，我就是。
这些是我的文件:
crud-list.component.html

<table class="table table-bordered table-striped">
  <thead>
    <tr>
      <th>Id</th>
    </tr>
  </thead>
  <tbody>
    <tr *ngFor='let item of cruds'>
      <td>{{item.OrderNumber}}</td>
    </tr>
  </tbody>
</table>

crud-list.component.ts

import { Component, OnInit } from '@angular/core';
import { CrudRequestService } from '@modules/crud/crud-services/crud-request.service';

@Component({
  selector: 'app-crud-list',
  templateUrl: './crud-list.component.html',
  styleUrls: ['./crud-list.component.scss']
})
export class CrudListComponent {
  public cruds: Array<any>;

  constructor(private objService: CrudRequestService) {
    this.objService.get().subscribe(
      (oDataResult: any) => { this.cruds = oDataResult.value; },
      error => console.error(error)
    );
  }
}

crud.module.ts

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { Routes, RouterModule } from '@angular/router';

import { CrudListComponent } from '@modules/crud/crud-list/crud-list.component';
import { CrudFormComponent } from '@modules/crud/crud-form/crud-form.component';
import { CrudComponent } from '@modules/crud/crud.component';

const routes: Routes = [
  {
    path: '', component: CrudComponent, children: [
      { path: '', component: CrudListComponent },
      { path: 'create', component: CrudFormComponent },
      { path: 'edit/:id', component: CrudFormComponent }
    ]
  },
];

@NgModule({
  imports: [CommonModule, RouterModule.forChild(routes)],
  declarations: [CrudComponent]
})

export class CrudModule { }

app.module.ts

/* all the imports */

@NgModule({
  declarations: [
    AppComponent,
    ForbidenAccessComponent,
    PageNotFoundComponent,
    AppHeaderComponent,
    AppFooterComponent
  ],
  imports: [
    BrowserModule,
    HttpClientModule,
    NgbModule,
    AppRoutingModule,
    CoreModule
  ],
  providers: [
    {
      provide: HTTP_INTERCEPTORS,
      useClass: JwtInterceptor,
      multi: true,
    },
    BreadcrumbsService,
    AccordionService,
    ModalService,
    RequestService,
    IdentityProviderService
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

应用程序路由.module.ts

/* imports */

const routes: Routes = [
  { path: 'home', canActivate: [AuthGuard], component: HomeComponent },
  { path: 'crud', canActivate: [AuthGuard], loadChildren: () => import('@modules/crud/crud.module').then(m => m.CrudModule)},
  { path: '', redirectTo: '/home', pathMatch: 'full' },
  // The error status pages
  { path: '403', component: ForbidenAccessComponent },
  { path: '404', component: PageNotFoundComponent },
  { path: '**', redirectTo: '/404' }
];

@NgModule({
  imports: [
    CommonModule,
    RouterModule.forRoot(routes)
  ],
  exports: [RouterModule]
})
export class AppRoutingModule { }

Answer 1

当我在 stackblitz 中重新创建您的问题时，我没有问题。

https://stackblitz.com/edit/angular-60533597

确保将组件添加到模块 declarations以及 Routes .