Question

I’m using Uploadify to upload some images with ASP.NET.
I use Response.WriteFile() in ASP.NET to return the result of the upload back to JavaScript.
As specified in the documentation I’m using onAllComplete event to check for response string from ASP.NET.

The problem is it that the alert(response); is always undefined in JavaScript.

JavaScript code as below:

$(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); 
                }
            });
        });

ASP.NET code a 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");
        }
    }

Reason for the FormsAuthenticationTicket object is to pass the authentication cookie though when using the Uploadify with Firefox.

I have seen many examples where Response.Write returns a value back to the onAllComplete event. But all I get is undefined.
I have also tried to use Context.Response.Write, this.Response.Write, HttpContext.Current.Response.Write. They all return undefined.

Any help appreciated.
Thanks

Answer 1

It seems that the onAllComplete event never fires. This is possibly because I’m automatically uploading single files rather than multiple files.
I find that the onComplete event fires and I can use that instead.