private void saveExamResult()
 {
     try{
         string[]                     keys = context.Request.Form.AllKeys;
         ExamResultService            res  = new ExamResultService();
         ExamResult                   er   = res.getExamResultByID(context.Request.Form.Get("Id"));
         IDictionary <string, string> map  = new Dictionary <string, string>();
         foreach (string s in keys)
         {
             if (!s.Equals("Id") && !s.Equals("StudentSN") && !s.Equals("StudentName") && !s.Equals("ExamPlanName"))
             {
                 map.Add(s, context.Request.Form.Get(s));
             }
         }
         er.CouresScoreMap = map;
         res.save(er);
         context.Response.Write("1");
     }
     catch (Exception e)
     {
         context.Response.Write("0");
     }
 }