学步园

        /// <summary>
        /// 下载文件
         /// </summary>
        /// <param name="fileURL">远程文件地址</param>
        /// <param name="filePath">本地存储路径</param>
        /// <returns></returns>
        private void DownLoadFile(string fileURL,string filePath)
        {
            FileStream wrtr = null;
            try
            {
                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(fileURL);
                HttpWebResponse resp = (HttpWebResponse)req.GetResponse();

                Stream respStream = resp.GetResponseStream();
                wrtr = new FileStream(filePath, FileMode.Create);

                byte[] inData = new byte[4096]; 

                int bytesRead = respStream.Read(inData, 0, inData.Length);
                while (bytesRead > 0)
                {
                    wrtr.Write(inData, 0, bytesRead);
                    bytesRead = respStream.Read(inData, 0, inData.Length);
                }
            }
            catch (Exception ep)
            {
                MessageBox.Show(ep.Message);
            }
            finally
            {
                if (wrtr != null)
                    wrtr.Close();
            }
        }

 

//调用
DownLoadFile(@"http://www.abc.cn/down/a.rar", @"\Program Files\a.rar");