Sort the selected files in Angular Uploader component

23 Jan 20244 minutes to read

You can sort the selected files in an uploader component by using the selected event. Refer to the following example.

app.component.ts

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

import { UploaderComponent, SelectedEventArgs, FileInfo } from '@syncfusion/ej2-angular-inputs';

@Component({
    selector: 'app-root',
    templateUrl: 'default.html',
    styleUrls: ['index.css']
})

export class AppComponent {
   @ViewChild('defaultupload')
    public uploadObj?: UploaderComponent;

    public path: Object = {
        saveUrl: 'https://services.syncfusion.com/angular/production/api/FileUploader/Save',
        removeUrl: 'https://services.syncfusion.com/angular/production/api/FileUploader/Remove'
    };
  public initial:boolean = true;
  public onSelect(args: SelectedEventArgs): void {
    if (this.initial) { this.initial = false; return; }
    args.isModified = true;
    let oldFiles: FileInfo[] = this.uploadObj?.getFilesData() as FileInfo[];
    let filesData: FileInfo[] = args.filesData.concat(oldFiles);
    let modifiedData: FileInfo[] = this.sortFileList(filesData);
    args.modifiedFilesData = modifiedData;
}

public sortFileList(filesData: FileInfo[]): FileInfo[] {
    let files: FileInfo[] = filesData;
    let fileNames: string[] = [];
    for (let i: number = 0; i < files.length; i++) {
        fileNames.push(files[i].name);
    }
    let sortedFileNames: string[] = fileNames.sort();
    let sortedFilesData: FileInfo[] = [];
    let index: number = 0;
    for (let name of sortedFileNames) {
        for (let i: number = 0; i < files.length; i++) {
            if (name === files[i].name) {
                sortedFilesData.push(files[i]);
            }
        }
    }
    return sortedFilesData;
}
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { UploaderModule } from '@syncfusion/ej2-angular-inputs';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, UploaderModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule {
}

main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

import 'zone.js';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

You can also explore Angular File Upload feature tour page for its groundbreaking features. You can also explore our Angular File Upload example to understand how to browse the files which you want to upload to the server.