NetHadoop.FSClient.MutDownLoad C# (CSharp) Method

        public void MutDownLoad(BackgroundWorker worker, string localRootPath, List<FileStatus> fileList,int fileType)
        {
            //相同操作
               bool sameOp = false;
               //是否覆盖
               bool IsOver = false;
            //准备创建连接
               Thrift.Transport.TBufferedTransport btsport = null;
               ThriftHadoopFileSystem.Client thriftClient = Connect(out btsport);

               if (thriftClient != null)//连接成功
               {
               int totalCount = fileList.Count;
               int currentCount = 0;
               //开始上传
               worker.ReportProgress(0, new ProgressState() { ListBoxMsg = "开始下载！", totalCount = totalCount, CurrentCount = 0 });
               //循环
               foreach (FileStatus myfile in fileList)
               {
                   currentCount++;
                   int pgPresent = (int)((double)currentCount / totalCount * 100);

                    string fileName = Path.GetFileName(myfile.Path);
                   if (myfile.Isdir == false)
                   {

                       string savePath = localRootPath + "/" + fileName;
                       if (fileType == 1&&myfile.FileName!=null)
                       {
                           savePath = localRootPath + "/" + myfile.FileName;
                       }
                       if (fileType == 2 && myfile.FileName != null)
                       {
                           savePath = localRootPath + "/" + myfile.FileName+"/"+fileName;
                       }
                       //显示总进度
                       worker.ReportProgress(pgPresent, new ProgressState() { CurrentTitle = fileName, CurrentCount = currentCount });

                       #region 是否存在
                       if (!sameOp)
                       {
                           bool exsitFile = File.Exists(savePath);
                           if (exsitFile)
                           {
                               SureDialog myDialog = new SureDialog();
                               MyShowDialogResult myDR = new MyShowDialogResult();
                               myDialog.ShowDialog(fileName, myDR);
                               sameOp = myDR.IsCheck;
                               IsOver = myDR.Result;
                               if (!myDR.Result)
                               {
                                   worker.ReportProgress(pgPresent, new ProgressState() { ListBoxMsg = fileName + " 跳过 " });
                                   continue;
                               }
                           }
                       }
                       else
                       {
                           bool exsitFile = File.Exists(savePath);
                           if (exsitFile)
                           {
                               if (!IsOver)
                               {
                                   worker.ReportProgress(pgPresent, new ProgressState() { ListBoxMsg = fileName + "跳过 " });
                                   continue;
                               }
                           }
                       }
                       #endregion

                       #region 单个下载
                       bool result = false;
                       ThriftHandle th = thriftClient.open(new Pathname() { pathname = myfile.Path });
                       // 创建文件流
                       FileStream fs = new FileStream(savePath, FileMode.Create, FileAccess.Write);
                       long totalBytes = 0;
                       int readLength = 1024 * 1024;
                       try
                       {
                           UTF8Encoding utf8 = new UTF8Encoding(false, true);
                           while (true)
                           {
                               int needRead = readLength;
                               if (myfile.Length - totalBytes < readLength)
                               {
                                   needRead = (int)(myfile.Length - totalBytes);
                               }
                               if (needRead <= 0)
                                   break;

                               byte[] fileBuffer = thriftClient.read(th, totalBytes, needRead);
                               byte[] myfileBuffer = Encoding.Convert(utf8, Encoding.GetEncoding("iso-8859-1"), fileBuffer);
                               totalBytes += needRead;
                               fs.Write(myfileBuffer, 0, myfileBuffer.Length);

                               //显示单个上传进度
                               int mypresent = (int)((double)totalBytes / myfile.Length * 100);
                               worker.ReportProgress(pgPresent, new ProgressState() { CurrentTitle = mypresent + "% " + fileName });

                           }
                           result = true;
                       }
                       catch (Exception ee)
                       {
                           throw ee;
                       }
                       finally
                       {
                           fs.Dispose();
                           if (thriftClient != null)
                               thriftClient.close(th);
                       }

                       #endregion

                       string msg = string.Format("{0} 下载{1}", Path.GetFileName(fileName), result ? "成功" : "失败");
                       worker.ReportProgress(pgPresent, new ProgressState() { ListBoxMsg = msg });
                   }
                   else
                   {
                       worker.ReportProgress(pgPresent, new ProgressState() { ListBoxMsg = fileName+"不是文件！"});
                   }
               }
               }

               //释放连接
               if (btsport != null)
               {
               btsport.Close();
               }
        }

        private void DoDownLoadWork(object sender, DoWorkEventArgs e)
        {
            DownloadArg da = e.Argument as DownloadArg;

            FSClient fs = new FSClient();

            fs.MutDownLoad(worker, da.SavePath, da.FileList, da.OutFileType);
            e.Result = "'" + da.SavePath + "',共找到" + da.FileList.Count + "个文件";
        }