Tracking the Successfully uploaded File Names by 'Uploadify' Jquery plugin

I am using 'Uploadify' Jquery plugin in my MVC 3.0 application to upload multiple files. Its working fine, but showing the list of files which got failed while uploading.

How to track the Successfully uploaded File Names?

My script looks like :

<link href="@Href("~/Content/uploadify.css")" rel="stylesheet" />
    <script src="@Href("~/Scripts/jquery-1.4.1.js")" type="text/javascript"></script>
    <script src="@Href("~/Scripts/jquery.uploadify.js")" type="text/javascript"></script>

<script type="text/javascript">开发者_StackOverflow中文版
    $(window).load(
    function () {
        $("#fileuploader").fileUpload({
            'uploader': '/Scripts/uploader.swf',
            'cancelImg': '/Images/cancel.png',
            'buttonText': 'Select Image',
            'script': 'Home/Upload',
            'folder': '/uploads',
            'fileDesc': 'Image & XML Files',
            'fileExt': '*.jpg;*.jpeg;*.gif;*.png;*.xml',
            'multi': true,
            'auto': true
        });
    }
);
    </script>

My HTML code :

<div id="fileuploader"></div>
<div>Upload Status</div>
Successful Files : <div> @TempData["SuccessfulFileList"]</div>
Failed Files :<div> @TempData["FailedFileList"]</div>

The Controller code goes like this:

        private static List<string> _successfulFileList = new List<string>();
        private static List<string> _failedFileList = new List<string>();

        public string Upload(HttpPostedFileBase fileData)
        {
            try
            {
                var fileName = this.Server.MapPath("~/uploads/" + System.IO.Path.GetFileName(fileData.FileName));
                fileData.SaveAs(fileName);
                _successfulFileList.Add(fileName);
            }
            catch
            {
                var failedFileName = fileData.FileName;
                _failedFileList.Add(failedFileName);
            }

            TempData["SuccessfulFileList"] = _successfulFileList;
            TempData["FailedFileList"] = _failedFileList;
            return "Some Files Get uploaded";
        }

You are using a Flash component to upload your files (Uploadify). Flash components don't send cookies. Sessions are tracked by cookies. TempData uses Session. Conclusion => you cannot use TempData with a Flash client. There are some ugly workarounds.

This being said using a static list in your controller to store uploaded files is very dangerous because the List<T> object is not thread safe and if you have 2 users uploading their files in parallel your application could crash.

As an alternative you could store the list of the uploaded files to your datastore (database or something) and fetch it from there instead of relying on session.

I found a quite descriptive explanation here : Link

Ref : http://blog.bobcravens.com/2010/02/upload-files-with-progress-using-uploadify/