Angular : How to Add/Remove Files in the Angular?

Question

Here i choose multiple images and shows using *ngFor And there I have placed a delete button which is appear in the screenshot, click on delete button i want to delete chosen image from chosen list i tried below code but i not getting proper solution.

add.component.html

<button mat-raised-button (click)="fileInput.click()">Select File</button>

<input style="display: none" type="file" (change)="onFileChanged($event)" #fileInput multiple="true">

<div *ngFor="let selected of selectedFile;let index = index">
  <h3>{{selected.name}}</h3>
  <button mat-icon-button (click)="removeSelectedFile(index)">delete</button>
</div>

add.component.ts

selectedFile: File;
ArrayOfSelectedFile = new Array<string>();

onFileChanged(event : any) {
  this.ArrayOfSelectedFile= [];
  this.selectedFile = event.target.files;
  this.ArrayOfSelectedFile.push(event.target.files);
}

removeSelectedFile(index){
  this.ArrayOfSelectedFile.splice(index,1);
}

Answer 1

HTML Code:

<button mat-raised-button (click)="fileInput.click()">Select File</button>

<input style="display: none"  #attachments type="file" (change)="onFileChanged($event)" #fileInput multiple="true">

<div *ngFor="let selected of listOfFiles;let index = index">
  <h3>{{selected}}</h3>
  <button mat-icon-button (click)="removeSelectedFile(index)">delete</button>
</div>

And TS code:

Import this:

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

And Inside your component class:

@ViewChild('attachments') attachment: any;

fileList: File[] = [];
listOfFiles: any[] = [];

onFileChanged(event: any) {
    for (var i = 0; i <= event.target.files.length - 1; i++) {
      var selectedFile = event.target.files[i];
      this.fileList.push(selectedFile);
      this.listOfFiles.push(selectedFile.name)
  }

  this.attachment.nativeElement.value = '';
}



removeSelectedFile(index) {
 // Delete the item from fileNames list
 this.listOfFiles.splice(index, 1);
 // delete file from FileList
 this.fileList.splice(index, 1);
}

If you notice that the Deleted file is not available for upload again for that I have used @ViewChild to reset the value = '', then you can select the deleted file again.

Here is a working StackBlitz example.

Answer 2

You can check this Multiple file upload delete, let me know if you want any clarification on same.