// -------------------------------------------------------
        // 查询
        // -------------------------------------------------------

        #region 函数:FindOne(string id)
        /// <summary>查询某条记录</summary>
        /// <param name="id">标识</param>
        /// <returns>返回实例<see cref="ContactInfo"/>的详细信息</returns>
        public ContactInfo FindOne(string id)
        {
            return(provider.FindOne(id));
        }