/// <summary>
        /// 退出日志
        /// </summary>
        public void ExitLog(LoginLogs objLog)
        {
            string sql = "update LoginLogs set ExitTime=@ExitTime where LogId=@LogId";

            SqlParameter[] parameters = new SqlParameter[]
            {
                new SqlParameter("@ExitTime", SQLHelper.GetDBTime()),
                new SqlParameter("@LogId", objLog.LogId)
            };
            try
            {
                SQLHelper.Update(sql, parameters);
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }