public void ShowCaptcha()
        {
            HttpWebResponse response = HttpRequestHelper.SendRequest(_imageUrl);
            Image           image;

            using (Stream s = response.GetResponseStream())
            {
                image = Bitmap.FromStream(new MemoryStream(StreamHelper.AsBytes(s)));
            }

            using (image)
            {
                using (GDataCaptchaForm form = new GDataCaptchaForm())
                {
                    form.SetImage(image);
                    _dialogResult = form.ShowDialog(_owner);
                    if (_dialogResult == DialogResult.OK)
                    {
                        _reply = form.Reply;
                    }
                }
            }
        }
        public void ShowCaptcha()
        {
            HttpWebResponse response = HttpRequestHelper.SendRequest(_imageUrl);
            Image image;
            using (Stream s = response.GetResponseStream())
            {
                image = Bitmap.FromStream(new MemoryStream(StreamHelper.AsBytes(s)));
            }

            using (image)
            {
                using (GDataCaptchaForm form = new GDataCaptchaForm())
                {
                    form.SetImage(image);
                    _dialogResult = form.ShowDialog(_owner);
                    if (_dialogResult == DialogResult.OK)
                        _reply = form.Reply;
                }
            }
        }