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    File Uploader

    Validation

    This demo shows how to use the allowedFileExtensions and maxFileSize properties to limit the maximum size and specify file extensions that the FileUploader accepts. Note that demonstrated validation is client-side — you should implement the server-side validation. You can see an example under the FileUploaderController tab in the ASP.NET MVC version of this demo.

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    const DemoApp = angular.module('DemoApp', ['dx']); DemoApp.controller('DemoController', ($scope) => { $scope.fileUploaderImages = { multiple: true, uploadMode: 'useButtons', uploadUrl: 'https://js.devexpress.com/Demos/NetCore/FileUploader/Upload', allowedFileExtensions: ['.jpg', '.jpeg', '.gif', '.png'], }; $scope.fileUploaderMaxSize = { multiple: true, uploadMode: 'useButtons', uploadUrl: 'https://js.devexpress.com/Demos/NetCore/FileUploader/Upload', maxFileSize: 4000000, }; });
    <!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" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.2.6/css/dx.light.css" /> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.8.2/angular.min.js"></script> <script>window.angular || document.write(decodeURIComponent('%3Cscript src="js/angular.min.js"%3E%3C/script%3E'))</script> <script src="https://cdn3.devexpress.com/jslib/22.2.6/js/dx.all.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container" ng-app="DemoApp" ng-controller="DemoController"> <div class="main-block"> <div class="file-uploader-block"> <div dx-file-uploader="fileUploaderImages"></div> <span class="note">Allowed file extensions: <span>.jpg, .jpeg, .gif, .png</span>.</span> </div> <div class="file-uploader-block" style="float: right"> <div dx-file-uploader="fileUploaderMaxSize"></div> <span class="note">Maximum file size: <span>4 MB</span>.</span> </div> </div> </div> </body> </html>
    .file-uploader-block { width: 350px; float: left; } .note { font-size: 10pt; color: #484848; margin-left: 9px; } .note > span { font-weight: 700; } .main-block { max-width: 900px; min-width: 700px; }