/// <summary>
        /// 移除指定索引位置的DBrecord对象
        /// </summary>
        /// <param name="index"></param>
        /// <returns></returns>
        public DBRecord RemoveAt(int index)
        {
            DBRecord record = recordContainer[index];

            recordContainer.RemoveAt(index);
            return(record);
        }
 /// <summary>
 /// 添加DBRecord对象并返回新添加的对象
 /// </summary>
 /// <param name="record"></param>
 /// <returns></returns>
 public DBRecord Add(DBRecord record)
 {
     recordContainer.Add(record);
     return(record);
 }