public bool Delete(string exceptionalLogId, out string strResult)
        {
            strResult = string.Empty;
            bool result       = false;
            Guid exceptionid  = new Guid(exceptionalLogId);
            var  exceptionlog = ExceptionalLogRepository.GetQueryable().FirstOrDefault(lo => lo.ExceptionalLogID == exceptionid);

            if (exceptionlog != null)
            {
                try
                {
                    ExceptionalLogRepository.Delete(exceptionlog);
                    ExceptionalLogRepository.SaveChanges();
                    result = true;
                }
                catch (Exception e)
                {
                    strResult = "原因:" + e;
                }
            }
            else
            {
                strResult = "原因:未找到当前需要删除的数据!";
            }
            return(result);
        }
        public bool Emptys(out string strResult)
        {
            strResult = string.Empty;
            bool result       = false;
            var  exceptionlog = ExceptionalLogRepository.GetQueryable();

            if (exceptionlog != null)
            {
                foreach (var log in exceptionlog)
                {
                    ExceptionalLogRepository.Delete(log);
                }
                ExceptionalLogRepository.SaveChanges();
                result = true;
            }
            else
            {
                strResult = "原因:未找到当前需要删除的数据!";
            }
            return(result);
        }