Add confirm dialog to remove the files

25 Feb 20221 minute to read

You can customize the uploader control using confirm dialog before removing the files.
Here, ej2 dialog is used as confirm dialog. Refer to the following example.

<div class="control_wrapper">
    @Html.EJS().Uploader("UploadFiles").Removing("onremove").AsyncSettings(new Syncfusion.EJ2.Inputs.UploaderAsyncSettings { SaveUrl = "", RemoveUrl = "" }).Render()
    @Html.EJS().Dialog("dialog").Target("body").Visible(false).Width("250px").Content("Confirm to remove the file?").Buttons(ViewBag.confirmbutton).Render()

    var removeFile = [], dialog;

    window.onload = function () {
        dialog = document.getElementById("dialog").ej2_instances[0];

    function onremove(args) {
        emoveFile = [];
        args.cancel = true;

    function onClick(args) {
        var uploadObj = document.getElementById("UploadFiles").ej2_instances[0];
        uploadObj.remove(removeFile[0], false, true);

    function Close() {
.control_wrapper {
    max-width: 400px;
    margin: 0 auto;

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