Programmatic file upload with chunking: Only the first file is sent

Question

When doing a programmatic file upload using the jQuery-File-Upload plugin with chunking enabled I can not get more than one file to be sent. I am making the call as follows: ``` fileUploadWidget.fileupload('send', { files: filesList }) ``` `filesList` is a list of File objects. Also I have set maxChunkSize and set singleFileUploads to true (I also tried false) as indicated on the Options wiki page. Has anyone had any success getting this to work? Update: I'd made an issue on GitHub for this problem and here's the response from the author: [...] Chunked uploads only support one file per request. That is, you can still simultaneously upload multiple files in chunks, but you'll have to send mutliple requests for that. Our Solution: As has been already commented, and what we ended up doing, was to send the files in a loop where `widget` was initialized with sequentialUploads set to `true` (you'll want this depending on how your backend is configured): ``` // for illustration only // does…

Accepted Answer

If you use C# as back-end, you can try this (Client-Side, JQuery):

```
 $("#btnUpload").click(function () { // btnUpload is the ID of any button for upload
            var formdata = new FormData(); //FormData object
            var fileInput = document.getElementById('fileInput');
            //Iterating through each files selected in fileInput
            for (i = 0; i < fileInput.files.length; i++) {
                //Appending each file to FormData object
                formdata.append(fileInput.files[i].name, fileInput.files[i]);
            }
            //Creating an XMLHttpRequest and sending
            var xhr = new XMLHttpRequest();
            xhr.open('POST', '/UploadMethod'); // UploadMethod is your back-end code
            xhr.send(formdata);
            xhr.onreadystatechange = function () {
                if (xhr.readyState == 4 && xhr.status == 200) {
                    // alert("uploaded");
                    }
            }

});
```

and then in you UploadMethod do something like this: (ServerSide , C#)

```
public void Upload()
        {
            for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFileBase file = Request.Files[i]; //Uploaded file
                //Use the following properties to get file's name, size and MIMEType
                int fileSize = file.ContentLength;
                string fileName = file.FileName;
                string mimeType = file.ContentType;
                System.IO.Stream fileContent = file.InputStream;
                //To save file, use SaveAs method
                var appPath = HostingEnvironment.ApplicationPhysicalPath + "Documents/" + "_" +  DateTime.Now+ fileName;

file.SaveAs(appPath); //File will be saved in Documents folder
              }
        }
```

Programmatic file upload with chunking: Only the first file is sent

Solution

Problem