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File Uploader

Custom Dropzone

The FileUploader widget supports the drag-and-drop functionality to upload files.

In this demo, the dropZone option specifies the HTML element in which you can drag and drop files for upload. The dropZoneEnter and dropZoneLeave events allow you to customize the drop zone when the mouse pointer enters and leaves this zone while dragging the file.

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<div class="widget-container flex-box"> <span>Profile Picture</span> <div id="dropzone-external" class="flex-box" [ngClass]="isDropZoneActive ? ['dx-theme-accent-as-border-color', 'dropzone-active'] : ['dx-theme-border-color']" > <img id="dropzone-image" [src]="imageSource" [hidden]="!imageSource" alt="" /> <div id="dropzone-text" class="flex-box" > <span>Drag & Drop the desired file</span> <span>…or click to browse for a file instead.</span> </div> <dx-progress-bar #uploadProgress [min]="0" [max]="100" width="30%" [showStatus]="false" [visible]="progressVisible" [value]="progressValue" ></dx-progress-bar> </div> <dx-file-uploader #fileUploader dialogTrigger="#dropzone-external" dropZone="#dropzone-external" [multiple]="false" [allowedFileExtensions]="['.jpg', '.jpeg', '.gif', '.png']" uploadMode="instantly" uploadUrl="https://js.devexpress.com/Content/Services/upload.aspx" [visible]="false" (onDropZoneEnter)="onDropZoneEnter($event)" (onDropZoneLeave)="onDropZoneLeave($event)" (onUploaded)="onUploaded($event)" (onProgress)="onProgress($event)" (onUploadStarted)="onUploadStarted($event)" ></dx-file-uploader> </div>
import { NgModule, Component, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxFileUploaderModule, DxProgressBarModule } from 'devextreme-angular'; if(!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'] }) export class AppComponent { isDropZoneActive = false; imageSource = "#"; progressVisible = false; progressValue = 0; constructor() { this.onDropZoneEnter = this.onDropZoneEnter.bind(this); this.onDropZoneLeave = this.onDropZoneLeave.bind(this); this.onUploaded = this.onUploaded.bind(this); this.onProgress = this.onProgress.bind(this); this.onUploadStarted = this.onUploadStarted.bind(this); } onDropZoneEnter(e) { if(e.dropZoneElement.id === "dropzone-external") this.isDropZoneActive = true; } onDropZoneLeave(e) { if(e.dropZoneElement.id === "dropzone-external") this.isDropZoneActive = false; } onUploaded(e) { const file = e.file; const dropZoneText = document.getElementById("dropzone-text"); const fileReader = new FileReader(); fileReader.onload = () => { this.isDropZoneActive = false; this.imageSource = fileReader.result as string; } fileReader.readAsDataURL(file); dropZoneText.style.display = "none"; this.progressVisible = false; this.progressValue = 0; } onProgress(e) { this.progressValue = e.bytesLoaded / e.bytesTotal * 100; } onUploadStarted() { this.imageSource = ""; this.progressVisible = true; } } @NgModule({ imports: [ BrowserModule, DxFileUploaderModule, DxProgressBarModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #dropzone-external { width: 350px; height: 350px; background-color: rgba(183, 183, 183, 0.1); border-width: 2px; border-style: dashed; padding: 10px; } ::ng-deep #dropzone-external > * { pointer-events: none; } ::ng-deep #dropzone-external.dropzone-active { border-style: solid; } ::ng-deep .widget-container > span { font-size: 22px; font-weight: bold; margin-bottom: 16px; } ::ng-deep #dropzone-image { max-width: 100%; max-height: 100%; } ::ng-deep #dropzone-text > span { font-weight: 100; opacity: 0.5; } ::ng-deep #upload-progress { display: flex; margin-top: 10px; } ::ng-deep .flex-box { display: flex; flex-direction: column; justify-content: center; align-items: center; }
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here: // https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/ System.config({ transpiler: 'ts', typescriptOptions: { module: "system", emitDecoratorMetadata: true, experimentalDecorators: true }, meta: { 'typescript': { "exports": "ts" }, 'devextreme/localization.js': { "esModule": true } }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js', 'typescript': 'npm:typescript@3.5.3/lib/typescript.js', '@angular': 'npm:@angular', 'tslib': 'npm:tslib@2.0.3/tslib.js', 'rxjs': 'npm:rxjs@6.3.3', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.25.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@20.2.3', 'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@0.9.5/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.0.0', 'devexpress-gantt': 'npm:devexpress-gantt@2.0.0', 'devextreme-angular': 'npm:devextreme-angular@20.2.3', 'preact': 'npm:preact@10.5.5/dist/preact.js', 'preact/hooks': 'npm:preact@10.5.5/hooks/dist/hooks.js' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, packageConfigPaths: [ "npm:@angular/*/package.json", "npm:@angular/common/*/package.json", "npm:rxjs/package.json", "npm:rxjs/operators/package.json", "npm:devextreme-angular/*/package.json", "npm:devextreme-angular/ui/*/package.json", "npm:devextreme-angular/package.json", "npm:devexpress-diagram/package.json", "npm:devexpress-gantt/package.json", ] });
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.3/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script> <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script src="config.js"></script> <script> System.import('app').catch(console.error.bind(console)); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <demo-app>Loading...</demo-app> </div> </body> </html>