在Angular中，我使用浏览选项上传excel文件 . 但是，当我点击按钮时，它会向我显示一个跟踪器中的excel文件列表以及文件夹列表 . 如何隐藏显示文件夹列表 . 我只想显示当前文件夹中存在的excel文件列表 .
这是我的代码
<div
class=" input-group input-file invoiceUploadRow"
[ngClass]="(invoiceFullPath.invalid && (invoiceUpload.submitted || invoiceFullPath.touched)) ? 'has-error' : ''">
<input
[disabled]=previewScreen
type="file"
class="form-control"
accept=".csv, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel,.xls,.xlsx"
placeholder='Choose a file...'
name="invoiceFullPath"
[(ngModel)]="model.invoiceFullPath"
#invoiceFullPath="ngModel"
(change)="onChange($event)"
required/>
<div *ngIf="invoiceFullPath.invalid && (invoiceUpload.submitted || invoiceFullPath.touched)" class="help-block">
<ng-container *ngIf="invoiceFullPath.errors?.required">Product Id is required</ng-container>
</div>
<span class="input-group-btn">
<button [disabled]=previewScreen class="btn btn-warning btn-reset" type="reset">Reset</button>
</span>
</div>
<div class="buttons">
<button [disabled]=previewScreen class="btn btn-primary invoiceSubmitButton">Preview</button>
</div>