upload multiple files in one request Dropzone sending two requests

Question

I am trying to send multiple files in one request using DropZone js.

Here's my code :

Dropzone.autoDiscover = false;

var myDropzone = new Dropzone('#upload-Invoices', {       
    paramName: "files", 
    maxFilesize: 3.0, 
    maxFiles: 4,
    parallelUploads: 10000,
    uploadMultiple: true,
    autoProcessQueue: false
});

$('#btnUpload').on('click', function () {
    myDropzone.processQueue();
});

Controller :

public void FileUpload( IEnumerable<HttpPostedFileBase> file )
{
    // Do Something
}

View:

<form action="/Index/FileUpload"
      class="dropzone"
      id="upload-Invoices" data-ajax-method="POST" data-ajax="true">
    <input type="submit" value="Upload File to Server" id="btnUpload">
</form>

The files are being received although in diferrent requests, I want to send all files in one request, the Dropzone page has an option for it although it does not work. Thanks in Advance

Answer 1

you can use uploadMultiple property default value false change it to true

$(".dropzone").dropzone({
            // autoQueue:false,
            parallelUploads:10,
            uploadMultiple:true,

https://www.dropzonejs.com/#config-uploadMultiple

Answer 2

The Issue was that I was using an input type="submit" which would do another post by itself, changing it to type button worked.

Answer 3

Had the same problem, just add autoDiscover: false, to your dropzone options and it should work!

My options are like this:

Dropzone.options.UploadZone = {        
    addRemoveLinks: true,
    autoDiscover: false,
    uploadMultiple: true,
    parallelUploads: 10,
    maxFiles: 10,
    acceptedFiles: ".jpeg,.jpg,.png",
    autoProcessQueue: false,
    ...

With autoProcessQueue: false and uploadMultiple: true: for each 2 files i was getting a request.

Then I added parallelUploads: 10 and maxFiles: 10 and i don't know why but my first 2 files started uploading as soon as i putted them on the dropzone, even with autoProcessQueue: false.

Then I just add autoDiscover: false and everything worked fine from there!

good look!