public ActionResult ZhangADD(RuleDetailS te)
 {
     try
     {
         if (ef.RuleDetails.Any(x => x.BookID == ef.TextBooks.FirstOrDefault(a => a.BookName == te.BookIDName && a.Shan == false).BookID&& x.QuestionCount == te.QuestionCount && x.QuestionLevel == te.QuestionLevel && x.Shan == false && x.RuleID == ef.PaperRules.FirstOrDefault(b => b.RuleName == te.RuleIDName && b.Shan == false).RuleID))
         {
             return(Content("已经存在了,请重新添加"));
         }
         else
         {
             RuleDetail ta = new RuleDetail()
             {
                 BookID        = ef.TextBooks.FirstOrDefault(x => x.BookName == te.BookIDName).BookID,
                 RuleID        = ef.PaperRules.FirstOrDefault(x => x.RuleName == te.RuleIDName).RuleID,
                 QuestionCount = te.QuestionCount,
                 QuestionLevel = te.QuestionLevel
             };
             ef.Entry(ta).State = EntityState.Added;
             if (ef.SaveChanges() > 0)
             {
                 return(Content("添加成功"));
             }
             else
             {
                 return(Content("添加失败"));
             }
         }
     }
     catch (Exception ex)
     {
         return(Content(ex.ToString()));
     }
 }
        public ActionResult Update(RuleDetailS te)
        {
            RuleDetail ta = new RuleDetail()
            {
                BookID        = ef.TextBooks.FirstOrDefault(x => x.BookName == te.BookIDName && x.Shan == false).BookID,
                DetailID      = te.DetailID,
                QuestionCount = te.QuestionCount,
                QuestionLevel = te.QuestionLevel,
                RuleID        = ef.PaperRules.FirstOrDefault(x => x.RuleName == te.RuleIDName && x.Shan == false).RuleID,
            };

            ef.Entry(ta).State = EntityState.Modified;
            if (ef.SaveChanges() > 0)
            {
                return(Content("成功"));
            }
            else
            {
                return(Content("失败"));
            }
        }