DevExtreme v24.1 is now available.

Explore our newest features/capabilities and share your thoughts with us.

Your search did not match any results.

Custom Drop Zone

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

In this demo, the dropZone property 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.

Backend API
<template> <div class="widget-container flex-box"> <span>Profile Picture</span> <div id="dropzone-external" class="flex-box" :class="[isDropZoneActive ? 'dropzone-active' : '']" > <img id="dropzone-image" :src="imageSource" v-if="imageSource" alt="" > <div id="dropzone-text" class="flex-box" v-if="textVisible" > <span>Drag & Drop the desired file</span> <span>…or click to browse for a file instead.</span> </div> <DxProgressBar id="upload-progress" :min="0" :max="100" width="30%" :show-status="false" :visible="progressVisible" :value="progressValue" /> </div> <DxFileUploader id="file-uploader" dialog-trigger="#dropzone-external" drop-zone="#dropzone-external" :multiple="false" :allowed-file-extensions="allowedFileExtensions" upload-mode="instantly" upload-url="https://js.devexpress.com/Demos/NetCore/FileUploader/Upload" :visible="false" @drop-zone-enter="onDropZoneEnter" @drop-zone-leave="onDropZoneLeave" @uploaded="onUploaded" @progress="onProgress" @upload-started="onUploadStarted" /> </div> </template> <script setup lang="ts"> import { ref } from 'vue'; import { DxFileUploader } from 'devextreme-vue/file-uploader'; import { DxProgressBar } from 'devextreme-vue/progress-bar'; const isDropZoneActive = ref(false); const imageSource = ref(''); const textVisible = ref(true); const progressVisible = ref(false); const progressValue = ref(0); const allowedFileExtensions = ['.jpg', '.jpeg', '.gif', '.png']; function onDropZoneEnter({ component, dropZoneElement, event }) { if (dropZoneElement.id === 'dropzone-external') { const items = event.originalEvent.dataTransfer.items; const allowedFileExtensions = component.option('allowedFileExtensions'); const draggedFileExtension = `.${items[0].type.replace(/^image\//, '')}`; const isSingleFileDragged = items.length === 1; const isValidFileExtension = allowedFileExtensions.includes(draggedFileExtension); if (isSingleFileDragged && isValidFileExtension) { isDropZoneActive.value = true; } } } function onDropZoneLeave(e) { if (e.dropZoneElement.id === 'dropzone-external') { isDropZoneActive.value = false; } } function onUploaded({ file }) { const fileReader = new FileReader(); fileReader.onload = () => { isDropZoneActive.value = false; imageSource.value = fileReader.result as string; }; fileReader.readAsDataURL(file); textVisible.value = false; progressVisible.value = false; progressValue.value = 0; } function onProgress(e) { progressValue.value = (e.bytesLoaded / e.bytesTotal) * 100; } function onUploadStarted() { imageSource.value = ''; progressVisible.value = true; } </script> <style> #dropzone-external { width: 350px; height: 350px; background-color: rgb(183 183 183 / 10%); border-width: 2px; border-style: dashed; padding: 10px; border-color: var(--dx-color-border); } #dropzone-external > * { pointer-events: none; } #dropzone-external.dropzone-active { border-style: solid; border-color: var(--dx-color-primary); } .widget-container > span { font-size: 22px; font-weight: bold; margin-bottom: 16px; } #dropzone-image { max-width: 100%; max-height: 100%; } #dropzone-text > span { font-weight: 100; opacity: 0.5; } #upload-progress { display: flex; margin-top: 10px; } .flex-box { display: flex; flex-direction: column; justify-content: center; align-items: center; } </style>
window.exports = window.exports || {}; window.config = { transpiler: 'plugin-babel', meta: { '*.vue': { loader: 'vue-loader', }, '*.ts': { loader: 'demo-ts-loader', }, '*.svg': { loader: 'svg-loader', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, }, paths: { 'root:': '../../../../', 'npm:': 'https://unpkg.com/', }, map: { 'vue': 'npm:vue@3.2.47/dist/vue.esm-browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@1.1.1/index.js', 'demo-ts-loader': 'root:utils/demo-ts-loader.js', 'svg-loader': 'root:utils/svg-loader.js', 'mitt': 'npm:mitt/dist/mitt.umd.js', 'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@24.1.3/cjs', 'devextreme-vue': 'npm:devextreme-vue@24.1.3/cjs', 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.8/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13', 'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js', 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', }, packages: { 'devextreme-vue': { main: 'index.js', }, 'devextreme': { defaultExtension: 'js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.13/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, }, }; System.config(window.config);
import { createApp } from 'vue'; import App from './App.vue'; createApp(App).mount('#app');
<!DOCTYPE html> <html lang="en"> <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=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.3/css/dx.light.css" /> <script src="https://unpkg.com/typescript@4.9.5/lib/typescript.js"></script> <script type="module"> import * as vueCompilerSFC from "https://unpkg.com/@vue/compiler-sfc@3.4.16/dist/compiler-sfc.esm-browser.js"; window.vueCompilerSFC = vueCompilerSFC; </script> <script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import("./index.ts"); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"> </div> </div> </body> </html>
NOTE

Allowed file extensions: .jpg, .jpeg, .gif, .png

Maximum file size: 4 MB