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File Upload cannot delete file

Thread ID:





145666 Jul 3,2019 03:28 AM UTC Jul 3,2019 07:48 AM UTC ASP.NET Core - EJ 2 2
Tags: File Upload
Asked On July 3, 2019 03:28 AM UTC

I have implemented the file upload using the "chunked" example in combination of the non chunked example.

At first I use the example that is for non chunked and I was able to upload and delete files.

After moving to chunked I can no longer delete / remove files.

I have debugged the Action Method for "Remove" and it does get called but the file list is empty.

I have the following: cshtml

@using Syncfusion.EJ2
    var asyncSettings = new Syncfusion.EJ2.Inputs.UploaderAsyncSettings { SaveUrl =   @Url.Content("~/Uploader/Save"), RemoveUrl = @Url.Content("~/Uploader/Remove"), ChunkSize = 500000 }; 

<div class="control_wrapper">
<ejs-uploader id="UploadFiles" removing="onFileRemove" dropArea=".control-fluid" asyncSettings="@asyncSettings" maxFileSize="104857600" autoUpload="false" chunkFailure="onBeforeFailure" pausing="onPausing" resuming="onResuming">

@section Scripts {

    function addTokens(args) {
        args.currentRequest.setRequestHeader('XSRF-TOKEN', document.getElementsByName('__RequestVerificationToken')[0].value);

    var dropElement = document.getElementsByClassName('control-fluid')[0];
    function onChange(args) {
        var uploadObj = document.getElementById("UploadFiles")
        uploadObj.ej2_instances[0].asyncSettings.chunkSize = parseInt(args.itemData.chunkValue);
    var isInteraction = false;
    // to update flag variable value for automatic pause and resume
    function onPausing(args) {
        if (args.event !== null && !navigator.onLine) {
            isInteraction = true;
        else {
            isInteraction = false;
    // to update flag variable value for automatic pause and resume
    function onResuming(args) {
        if (args.event !== null && !navigator.onLine) {
            isInteraction = true;
        else {
            isInteraction = false;
    function onFileRemove(args) {
        args.postRawFile = false;
    // to prevent triggering chunk-upload failure event and to pause uploading on network failure
    function onBeforeFailure(args) {
        args.cancel = !isInteraction;
        var uploadObj = document.getElementById('UploadFiles').ej2_instances[0];
        // interval to check network availability on every 500 milliseconds
        var clearTimeInterval = setInterval(function () {
            if (navigator.onLine && !ej.base.isNullOrUndefined(uploadObj.filesData[0]) && uploadObj.filesData[0].statusCode == 4) {
            else {
                if (!isInteraction && !ej.base.isNullOrUndefined(uploadObj.filesData[0]) && uploadObj.filesData[0].statusCode == 3) {
        }, 500);
        // clear Interval after when network is available.
        function clearSetInterval() {

Here is the action method... UploadFiles Count = 0 for the Delete.
        public IActionResult Remove(IList<IFormFile> UploadFiles)

Replied On July 3, 2019 04:01 AM UTC

Fixed it.

function onFileRemove(args) {
        args.postRawFile = true; // must be true to send the file list

Prince Oliver [Syncfusion]
Replied On July 3, 2019 07:48 AM UTC

Hi Wayne,   

Thank you for your update. We are glad that the issue is resolved in your end. Let us know if you need any further assistance on this. 



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