[Notes] The learning network path to save the file to byte [], saved locally

        ///  <Summary> 
        /// The network path to save the file to byte [], saved locally
         ///  </ Summary> 
        ///  <param name = "zjkurl"> </ param> 
        public  void UrlToByte ( String zjkurl) { 
            the HttpWebRequest REQ = (the HttpWebRequest) HttpWebRequest.Create (zjkurl); 
            req.Method = " the GET " ;
             the using (WR = the WebResponse req.GetResponse ()) 
            { 
                the StreamReader responseStream = new new the StreamReader (wr.GetResponseStream (), Encoding. UTF8);
                 int length = (int)wr.ContentLength;
                byte[] bs = new byte[length];

                HttpWebResponse response = wr as HttpWebResponse;
                Stream stream = response.GetResponseStream();

                //读取到内存
                MemoryStream stmMemory = new MemoryStream();
                byte[] buffer1 = new byte[length];
                int i;
                while ((i = stream.Read(buffer1, 0, buffer1.Length)) > 0)
                {
                    stmMemory.Write(buffer1, 0, i);
                }
                byte[] arraryByte = stmMemory.ToArray();
                stmMemory.Close();
                //保存到本地
                string path = Server.MapPath(@"\a.jpg");
                FileStream fs = new FileStream(path, FileMode.Create);
                fs.Write(arraryByte, 0, arraryByte.Length);
                fs.Dispose();
            }
        }