FileVersionInfo FileInfo

  FileVersionInfo fv = FileVersionInfo.GetVersionInfo(filepath);

  get the version of the file : fv.FileVersion

  FileInfo fi =new FileInfo(filepath);

  fi.FullName:absolute path

  fi.Name:get the  name of file not contains the path

  fi.Extension:get the extension of the file which contains '.'

  fi.LastWriteTime :last write time.Type is DateTime