/// <summary>

         /// 上传文件

         /// </summary>

         /// <param name="fileName">文件名</param>

         /// <param name="fileStream">文件流</param>

         /// <returns></returns>

         public ResponseType<int> UploadFile(string projectId, string DocId, string LastModifier, Stream fileStream)

         {

             ResponseType<int> result = new ResponseType<int>();

             string Path = string.Empty;

             try

             {

                 if (fileStream == null)

                 {

                     throw new Exception("没有上传文件");

                 }

                 string relativePath = fileInfoBLL.GetFilePath(projectId, DocId);

                 Path = System.IO.Path.Combine(filePath, relativePath);

                 string fileName = fileInfoBLL.SaveFie(Path, fileStream);

                 FilesInfo filesInfo = new FilesInfo();

                 filesInfo.DocManageId = Convert.ToInt32(DocId);

                 filesInfo.FileName = fileName;

                 filesInfo.FilePath = System.IO.Path.Combine(relativePath, fileName);

                 filesInfo.IsChecked = false;

                 filesInfo.LastmodifiedDateTime = DateTime.Now;

                 filesInfo.LastModifier = LastModifier;

                 filesInfo.ProjectId = Convert.ToInt32(projectId);

                 int fileId = fileInfoBLL.SaveFileInfo(filesInfo);

                 if (fileId > )

                 {

                     result.IsSuccess = true;

                     result.ErrorMessage = "文件保存成功！";

                     result.Value = fileId;

                 }

             }

             catch (Exception ex)

             {

                 ExceptionHandler.ExceptionHelper.Instance.HandleException(ex);

                 result.IsSuccess = false;

                 result.ErrorMessage = "文件保存失败！";

             }

             return result;

         }

    /// <summary>

         /// 保存文件

         /// </summary>

         /// <param name="relatePath">文件保存的路径</param>

         /// <param name="fileSteam">文件流</param>

         public string SaveFie(string relatePath, Stream fileSteam)

         {

             string fileName = string.Empty;

             try

             {

                 if (!Directory.Exists(relatePath))  //判断文件目录

                 {

                     Directory.CreateDirectory(relatePath);

                 }              

                 using (var ms = new MemoryStream())

                 {

                     fileSteam.CopyTo(ms);

                     ms.Position = ;

                     var encoding = Encoding.UTF8;

                     var reader = new StreamReader(ms, encoding);

                     var headerLength = 0L;

                     //读取第一行

                     var firstLine = reader.ReadLine();

                     //计算偏移（字符串长度+回车换行2个字符）

                     headerLength += encoding.GetBytes(firstLine).LongLength + ;

                     //读取第二行

                     var secondLine = reader.ReadLine();

                     //计算偏移（字符串长度+回车换行2个字符）

                     headerLength += encoding.GetBytes(secondLine).LongLength + ;

                     //解析文件名  

                     fileName = new System.Text.RegularExpressions.Regex("filename=\"(?<fn>.*)\"").Match(secondLine).Groups["fn"].Value;

                     //一直读到空行为止

                     while (true)

                     {

                         //读取一行

                         var line = reader.ReadLine();

                         //若到头，则直接返回

                          if (line == null )

                             break;

                         //若未到头，则计算偏移（字符串长度+回车换行2个字符）

                          headerLength += encoding.GetBytes(line).LongLength + ;

                         if (string.IsNullOrEmpty(line))

                             break;

                     }

                     //设置偏移，以开始读取文件内容

                     ms.Position = headerLength;

                     ////减去末尾的字符串：“\r\n--\r\n”

                     ms.SetLength(ms.Length - encoding.GetBytes(firstLine).LongLength -  * );

                     using (var fileToupload = new FileStream(System.IO.Path.Combine(relatePath,fileName), FileMode.Create))

                     {

                         ms.CopyTo(fileToupload);

                         fileToupload.Close();

                         fileToupload.Dispose();

                     }

                 }

             }

             catch (Exception ex)

             {

                 ExceptionHandler.ExceptionHelper.Instance.HandleException(ex);

             }

             return fileName;

         }