上传或下载文件方法并写入日志

/// <summary> /// 下载并更新文件(本地客户端存在文件就用服务器文件覆盖掉,不存在该文件就创建并写入) /// </summary> /// <param name="serverFullName">服务器文件全名</param> /// <param name="localFullName">本地文件全名</param> /// <returns></returns> private bool DownUpdateFile(string serverFullName, string localFullName, string FolderName, out string mes) { try { int num = 0; num++; string url = txtdaml.Text.Trim(); /// 创建WebClient实例 WebClient myWebClient = new WebClient(); //NetworkCredential nc = new NetworkCredential(ServerUserName, ServerPassWord); Uri addy = new Uri(serverFullName); myWebClient.Credentials = CredentialCache.DefaultCredentials; ; string[] arrayfile = Directory.GetFiles(txtdaml.Text); WebRequest webReq = WebRequest.Create(localFullName); WebResponse webRes = webReq.GetResponse(); long fileLength = webRes.ContentLength; string fileName = Path.GetFileName(localFullName); //this.label4.Text = String.Format( // CultureInfo.InvariantCulture, // "上传进度 {0}/{1}", // num, // arrayfile.Length, // ); //rchtxtInfo.Text = rchtxtInfo.Text + string.Format("上传文件成功:{0},文件大小:{1}KB\n", fileName, (fileLength / 1024.0).ToString("N2")) + "\r\n"; progressBar1.Maximum = (int)fileLength; progressBar1.Value = 0; Application.DoEvents(); Stream stream = webRes.GetResponseStream(); StreamReader sr = new StreamReader(stream); byte[] bufferbyte = new byte[fileLength]; int allByte = (int)bufferbyte.Length; int startByte = 0; while (fileLength > 0) { int downByte = stream.Read(bufferbyte, startByte, allByte); if (downByte == 0) { break; } startByte = startByte + downByte; allByte = allByte - downByte; progressBar1.Value = startByte; //即progressBar1.Value = progressBar1.Value + downByte; } //本地文件存在则覆盖,不存在则创建 //string localFile = fbd.SelectedPath + "\\" + list[i]; //CreateNewDiretory(localFullName); try { myWebClient.UploadFile(addy, localFullName); //rchtxtInfo.Text = rchtxtInfo.Text + string.Format("上传文件成功:{0}\n", FolderName + "\\" + fileName) + "\r\n"; } catch { //创建或更新覆盖文件 FileStream fs = new FileStream(serverFullName, FileMode.OpenOrCreate, FileAccess.Write); fs.Write(bufferbyte, 0, bufferbyte.Length); stream.Close(); sr.Close(); fs.Close(); //rchtxtInfo.Text = rchtxtInfo.Text + string.Format("上传文件成功:{0}\n", FolderName + "\\" + fileName) + "\r\n"; } Application.DoEvents(); mes = ""; return true; } catch (Exception ex) { //MessageBox.Show(ex.Message, "上传中出现错误:"); mes = ex.Message.ToString(); return false; } }