multi file upload

 I have a jquery that let customer to drag and drop thier photo and aspx that uploads the image to a folder:

---------------------- AJAX--------------------

var xhr = new XMLHttpRequest();
                xhr.upload.addEventListener('progress', uploadProgress, false);
                xhr.onreadystatechange = stateChange;
                xhr.open('POST', 'upload.aspx', true);
                xhr.setRequestHeader('X-FILE-NAME', file.name);
                xhr.send(file);

------------------------------ CODE BEHIND -------------

Dim input As Stream = DirectCast(Request.InputStream, Stream)

            Dim bmp As New Bitmap(input)
            Response.Clear()
            Response.ContentType = "image/jpeg"
            bmp.Save("C:\Websites\\Uploads\test1.jpg", ImageFormat.Jpeg)

NOW, I want to let customers to drag and drop multiple images at once.

Does XMLHttpRequest can handle multiple drag and drop?? If so how can I fetch through the files (in code behind) that has been dragged so I can upload them to my folder?

Thanks for any help