public void Upload(long uri)
      {
          for (var i = 0; i < Request.Files.Count; i++)
          {
              var file = Request.Files[i];

              var fileName = Path.GetFileName(file.FileName);
              var path     = Path.Combine(@"C:\\inetpub\\wwwroot\\wopi\\files\\Checkin", fileName);
              file.SaveAs(path);

              var conn = new InforConnection(tu: _tu, tup: _tup);
              conn.CheckinDocumentWeb(uri, AppUserState.UserName,
                                      AppUserState.Wgs, AppUserState.Ds, path);
          }
      }