protected void UploadImage(string filepath)
    {
        var req = (HttpWebRequest)WebRequest.Create("http://api.imgur.com/2/upload");
        var bound = "-------------" + DateTime.Now.Ticks.ToString();
        var tmplField = "--" + bound + "\r\nContent-Disposition: form-data; name='{0}'\r\n\r\n{1}\r\n";
        var tmplFile = "--" + bound + "\r\nContent-Disposition: form-data; name='{0}'; filename='{1}'\r\nContent-Type={2}\r\n\r\n";
        req.Method = "POST";
        req.ContentType = "multipart/form-data; boundary=" + bound;

        using (var reqStream = req.GetRequestStream())
        {
            var reqWriter = new BinaryWriter(reqStream);

            reqWriter.Write(string.Format(tmplField, "key", "c06f4d0cdf6f2cc652635a08be34973d"));
            reqWriter.Write(string.Format(tmplField, "type", "file"));
            reqWriter.Write(string.Format(tmplFile, "image", Path.GetFileName(filepath), "image/" + Path.GetExtension(filepath).Substring(1)));
            reqWriter.Write(File.ReadAllBytes(filepath));
            reqWriter.Write("\r\n--" + bound + "--");
            reqWriter.Flush();
        }

        try
        {
            var res = req.GetResponse();
            using (var resStream = res.GetResponseStream())
            {
                XDocument doc = XDocument.Load(resStream);
                var link = from imgurLink in doc.Descendants("imgur_page")
                            from directLink in doc.Descendants("original")
                            select new UploadedImage
                            {
                                Link = imgurLink.Value,
                                DirectLink = directLink.Value
                            };
                _dispatcher.Invoke(new Action(() => UploadedImages.Add(link.FirstOrDefault())));
            }
        }
        catch (Exception e)
        {
            _dispatcher.Invoke(new Action(() => UploadedImages.Add(new UploadedImage { Error = e.Message })));
        }
    }