Alex Alex - 1 year ago 210
Ajax Question MVC 5 Ajax Multi File Upload may need value provider, suggestions?

I am working on MVC 5 application. And i need to upload multiple files.

What I know is HttpPostedFile and HttpPostedFileBase classes can get one file. But my condition is I need multiple files to be uploaded at once.

My question is,

1) Since there is no support for multiple file upload using ajax, do I need to write value provider that make my action to accept multiple files?

2) If I implement custom value provider, what should I use for parameter in action method (should it be

IEnumerable<HttpPostedFileBase> f
)?Because I did that and I am getting


Here is my Ajax call from View

var files =;
if (window.FormData !== undefined) {
var fd = new FormData();
for (x = 0; x < files.length; x++) {
fd.append("file" + x, files[x]);
// fd.append("fawad", "ali");
type: "POST",
url: "/FileOp/FileUpload",
contentType: false,
processData: false,
data: fd,
sucess: function (result) {
// alert();
error: function (xhr, status, p3, p4) {

And here is my action method (HttpPost)


public object FileUpload(IEnumerable<HttpPostedFileBase> file)


Answer Source

Your add files named file0, file1, file2 etc which will not bind to a parameter named file.

Change the code in the script to

for (x = 0; x < files.length; x++) {
    fd.append("file", files[x]); // modify

Alternatively, you could use

fd.append("[" + x + "].file", files[x]);
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