WebRequest wreq = WebRequest.Create("http://mmbiz.qpic.cn/mmbiz/8jauNKmzssNSibuH14RnI1EOLJhRMLDgrA4nfVCGLhHj2AGmGZrI0ms0ibbGNluhojItGpMQv9S4v754zwaJ9kxQ/0");            HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse();            Stream s = wresp.GetResponseStream();            System.Drawing.Image img;            img = System.Drawing.Image.FromStream(s);            string name=DateTime.Now.ToString("ddHHmmssffff");            img.Save("D:\\" + name+".jpg");