hi everybody !
i want to download images from url (for Rss Reader) ,I used this method  for download image
 
//**
  public  System.Drawing.Image DownloadImage(string _link)
    {
        System.Drawing.Image _tmpImage = null;
        try
        {
            System.Net.HttpWebRequest _HttpWebRequest = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(_link);
            _HttpWebRequest.AllowWriteStreamBuffering = true;
            _HttpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)";
            _HttpWebRequest.Referer = "http://www.google.com/";
            _HttpWebRequest.Timeout = 20000;
            System.Net.WebResponse _WebResponse = _HttpWebRequest.GetResponse();
            System.IO.Stream _WebStream = _WebResponse.GetResponseStream();
            _tmpImage = System.Drawing.Image.FromStream(_WebStream);
            _WebResponse.Close();
        }
        catch (Exception _Exception)
        {
            return null;
        }
        return _tmpImage;
    }
 
 
 
//**
 
but  it  doesn't download from some links ,example: