/// <summary>
 /// 取得该频道指定类别上的列表
 /// </summary>
 /// <param name="id">ID</param>
 /// <param name="channel_id">频道ID</param>
 /// <returns></returns>
 public DataTable GetParent(int id, int channel_id)
 {
     return(dal.GetParent(id, channel_id));
 }