The response value in Uploadify is consistently returning as undefined when used with ASP.NET

Currently, I am utilizing Uploadify to upload a series of images with the assistance of ASP.NET.
To transmit the outcome of the upload back to JavaScript, I have employed Response.WriteFile() in ASP.NET. I am adhering to the guidance provided in the documentation by utilizing the onAllComplete event to inspect the response string originating from ASP.NET.

The predicament appears to be that the alert(response); action constantly yields an undefined result in JavaScript.

The JavaScript code is as follows:

$(document).ready(function() {
            var auth = "<% = Request.Cookies[FormsAuthentication.FormsCookieName]==null ? string.Empty : Request.Cookies[FormsAuthentication.FormsCookieName].Value %>";
            $('#btnUpdateProfileImg').uploadify({
                'uploader': '../script/uploadify/uploadify.swf',
                'script': '../uploadprofimg.aspx',
                'cancelImg': '../script/uploadify/cancel.png',
                'folder': '../script/uploadify',
                'scriptData': { 'id': $(this).attr("id"), 'token': auth },
                'onAllComplete': function(event, queueID, fileObj, response, data) {
                    alert(response); 
                }
            });
        });

The ASP.NET code can be seen below:

protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            string token = Request.Form["token"].ToString();
            FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(token);
            if (ticket != null)
            {
                var identity = new FormsIdentity(ticket);
                if (identity.IsAuthenticated)
                {
                    HttpPostedFile hpFile = Request.Files["ProfileImage"];      
                    string appPath = HttpContext.Current.Request.ApplicationPath;
                    string fullPath = HttpContext.Current.Request.MapPath(appPath) + @"\avatar\";
                    hpFile.SaveAs(Server.MapPath("~/" + uniqName));
                    Response.ContentType = "text/plain";
                    Response.Write("test");    
                }
            }
        }
        catch (Exception ex)
        {
            Response.Write("test");
        }
    }

The utilization of the FormsAuthenticationTicket object aims to effectively carry over the authentication cookie during the usage of Uploadify in Firefox and similar browsers.

I have encountered numerous instances where Response.Write furnishes a return value to the onAllComplete event. Nevertheless, my situation only results in undefined feedback. I made attempts with Context.Response.Write, this.Response.Write, and

HttpContext.Current.Response.Write
. Unfortunately, they all delivered an undetermined output.

Your assistance on this matter would be greatly appreciated. Thank you.

Answer №1

The onAllComplete event doesn't seem to trigger for me. It's likely due to my automatic uploading of individual files instead of multiple files. I've noticed that the onComplete event does work, so I'll use that instead.

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