用web request 下载档案
public void DownloadPanelPrice(string url, string fileName){try{//如果要透過proxy且需要帳號密碼則需下列三行代碼System.Net.WebProxy proxy = new System.Net.WebProxy("proxyIP:port");proxy.Credentials = new System.Net.NetworkCredential("帳號", "密碼", "網域");WebRequest.DefaultWebProxy = proxy;//url="http://localhost/Data/abc.xls";WebRequest myWebRequest = WebRequest.Create(url);WebResponse myWebResponse = myWebRequest.GetResponse();Stream receiveStream = myWebResponse.GetResponseStream();//如果下載的檔案檔名固定則先刪除，再寫入，否則則視情況而定File.Delete(fileName);FileStream fs = new FileStream(fileName, FileMode.CreateNew);try{while (true){//讀一個byte, 寫一個byteint i = receiveStream.ReadByte();if (i == -1){break;}fs.WriteByte(Convert.ToByte(i));}}finally{fs.Close();myWebResponse.Close();}}catch (Exception ex){throw ex;}finally{WebRequest.DefaultWebProxy = null;}}
