2.0.0版本無法綁定到'ngIf'，因為它不是'div'的已知屬性

Question

我在* ngIf上出現錯誤任何想法可能出錯？ 我正在使用Angular 2的最新版本（2.0.0）。

Error: Uncaught (in promise): Error: Template parse errors:
Can't bind to 'ngIf' since it isn't a known property of 'div'. ("
</div>
</div>
<div class='row' [ERROR ->]*ngIf='listFilter'>
<div class='col-md-6'>
<h3>Filtered by: {{ listFilter"): EventlogComponent@12:25
Property binding ngIf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "directives" section. ("
</div>

這是我的HTML我在下面的Component.ts中定義了listFilter

<div class='panel panel-primary'>
    <div class='panel-heading'>
        {{ pageTitle }}
    </div>

    <!-- Filter the eventlogs   -->
    <div class='panel-body'>
        <div class='row'>
            <div class='col-md-2'>Filter by:</div>
            <div class='col-md-4'>
                <input type='text' [(ngModel)]='listFilter' />
            </div>
        </div>
        <div class='row' *ngIf='listFilter'>
            <div class='col-md-6'>
                <h3>Filtered by: {{ listFilter }} </h3>
            </div>
        </div>
        <div class='has-error' *ngIf='errorMessage'>{{ errorMessage }}</div>

        <div class='table-responsive'>
            <table class='table' *ngIf='eventlogs && eventlogs.length'>
                <thead>
                    <tr>
                        <th>Event ID</th>
                        <th>Tenant</th>
                        <th>Composition</th>
                        <th>Composition Execution</th>
                        <th>Instrument</th>
                        <th>Start Time</th>
                    </tr>
                </thead>
                <tbody>
                    <tr *ngFor='let eventlog of eventlogs | eventlogFilter:listFilter'>
                        <td> <a [routerLink]="['/eventlog', eventlog.id]">
                            {{ eventlog.id }}
                            </a>
                        </td>
                        <td>{{ eventlog.tenant }} </td>
                        <td>{{ eventlog.composition }} </td>
                        <td>{{ eventlog.compositionExecution }}</td>
                        <td>{{ eventlog.instrument }}</td>
                        <td>{{ eventlog.startTime }}</td>
                    </tr>
                </tbody>
            </table>
        </div>
    </div>
</div>

Component.ts，listFilter被聲明

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

import { IEventlog } from './eventlog';
import { EventlogService } from './eventlog.service';

@Component({
    templateUrl: 'app/eventlogs/eventlog.component.html',
    styleUrls: ['app/eventlogs/eventlog.component.css']
})
export class EventlogComponent implements OnInit {
    pageTitle: string = 'Monitor Event Log';
    listFilter: string = ' ';
    errorMessage: string;
    eventlogs: IEventlog[];

    constructor(private _eventlogService: EventlogService) {

    }

    ngOnInit(): void {
           this._eventlogService.getEventlogs()
                     .subscribe(
                       eventlogs => this.eventlogs = eventlogs,
                       error =>  this.errorMessage = <any>error);
    }

}

Answer 1

對於其他任何人來到這里同樣的問題，我開始把我的所有組件都放在功能模塊中，所以我帶來了相同的錯誤，谷歌搜索后才發現這個角色官方文檔 ：

更准確地說，NgIf在@ angular / common的CommonModule中聲明。

CommonModule提供了許多應用程序所需的常用指令，包括ngIf和ngFor。

BrowserModule導入CommonModule並重新導出它。 實際效果是BrowserModule的導入器自動獲取CommonModule指令。

剛剛在我的新模塊中導入了該模塊，它就解決了。