我是 Angular 的新手，我不知道這里發(fā)生了什么。我有一個(gè) MVC 控制器，它給我正確的值，例如 {PostalContactPerson : jeff} 但是我的 Angualar 視圖無法識別輸入框中頁面加載的值。請問我怎樣才能將值輸入文本框？我很困惑為什么當(dāng)從同一個(gè)表單組顯示其他值時(shí)它是“空白的”。表單.component.tsexport class FormComponent implements OnInit {  data: any = null; this.arService.get(id, true)                .subscribe(data => {                    this.loading = false;                    this.ar = data;                    this.attachments = this.ar.attachments.filter(e => e.type == Enums.AttachmentType.Normal);                    **this.data = this.ensureData(data.formData);                    this.ar.formData = this.data;**  this.stationInformationForm = formBuilder.group({    "businessNumbersGroup": formBuilder.group({      "acn": [this.data.acn],      "icn": [this.data.icn],      "postalcontactperson": [this.data.postaladdress],    }, ),  });}ensureData(data: any): any {        if (data == null) {            data = {};        } if (!data["postalcontactperson"]) {        data["postalcontactperson"] = { state: "" };    }表單.component.html<div [formGroup]="stationInformationForm.controls['businessNumbersGroup']">  <div class="row">    <div class="col-sm-6">      <div class="form-group">        <label>ACN</label>        <div class="form-description">Specify if applicable</div>        <input type="text" [ngClass]="{'has-error': !stationInformationForm.controls['businessNumbersGroup'].valid && (stationInformationForm.controls['businessNumbersGroup'].controls['acn'].touched || workflowSections[0].submitted)}" formControlName="acn" [(ngModel)]="data.acn"          class="form-control" />        <hr/>      </div>      <div class="form-group">        <label>postalcontactperson</label>        <div class="form-description">Specify if applicable</div>          [(ngModel)]="data.postalcontactperson" class="form-control" />      </div>      <hr/>    </div>  </div></div>