/// <summary>
/// 获取正确答案，计算分数，更新题库selectcount和rightcount
/// </summary>
/// <param name="studentAnswer"></param>
/// <returns></returns>
private PaperContent GetStandardAnswer(PaperContent studentAnswer)
{
PaperContent standardAnswer = new PaperContent();
tbSingleDAL singleDAL = new tbSingleDAL();
tbCheckDAL checkDAL = new tbCheckDAL();
tbJudgeDAL judgeDAL = new tbJudgeDAL();
tbBlankDAL blankDAL = new tbBlankDAL();
tbAnswerDAL answerDAl = new tbAnswerDAL();
tbAnswerOfPaperDAL answerOfPaperDAL = new tbAnswerOfPaperDAL();
//取得数据库连接
SqlConnection conn = SQLHelper.GetConnection();
//打开数据库连接
conn.Open();
//创建事务
SqlTransaction SqlTransaction = conn.BeginTransaction();
try
{
//单选
foreach (tbSingle item in studentAnswer.SRContent)
{
tbSingle single = singleDAL.GetModelTran(item.id, SqlTransaction);
single.selectcount = single.selectcount + 1;
if (single.ans == item.ans)
{
//正确
sum += paper.sa_scoreofeach;
single.rightcount = single.rightcount + 1;
}
standardAnswer.SRContent.Add(single);
singleDAL.UpdateTran(single, SqlTransaction);
}
//多选
foreach (tbCheck item in studentAnswer.CBContent)
{
tbCheck check = new tbCheckDAL().GetModelTran(item.id, SqlTransaction);
check.selectcount = check.selectcount + 1;
if (check.ans == item.ans)
{
//正确
sum += paper.cb_scoreofeach;
check.rightcount = check.rightcount + 1;
}
standardAnswer.CBContent.Add(check);
checkDAL.UpdateTran(check, SqlTransaction);
}
//判断
foreach (tbJudge item in studentAnswer.JDContent)
{
tbJudge judge = new tbJudgeDAL().GetModelTran(item.id, SqlTransaction);
judge.selectcount = judge.selectcount + 1;
if (judge.ans == item.ans)
{
//正确
sum += paper.jd_scoreofeach;
judge.rightcount = judge.rightcount + 1;
}
standardAnswer.JDContent.Add(judge);
judgeDAL.UpdateTran(judge, SqlTransaction);
}
//填空
foreach (tbBlank item in studentAnswer.BFContent)
{
tbBlank blank = new tbBlankDAL().GetModelTran(item.id, SqlTransaction);
blank.selectcount = blank.selectcount + 1;
if (blank.ans == item.ans)
{
//正确
sum += paper.bf_scoreofeach;
blank.rightcount = blank.rightcount + 1;
}
standardAnswer.BFContent.Add(blank);
blankDAL.UpdateTran(blank, SqlTransaction);
}
//简答题 不比较答案，但返回正确答案 并记录学生答案
foreach (tbAnswer item in studentAnswer.SAContent)
{
tbAnswer answer = new tbAnswerDAL().GetModelTran(item.id, SqlTransaction);
standardAnswer.SAContent.Add(answer);
if (arrange.arrangetype == 2)
{
//插入学生答案
tbAnswerOfPaper answerOfPaper = new tbAnswerOfPaper();
answerOfPaper.answerid = answer.id;
answerOfPaper.arrangeid = arrange.id;
answerOfPaper.useranswer = item.ans;
answerOfPaper.userid = score.userid;
answerOfPaper.allscore = paper.sa_scoreofeach;
answerOfPaper.getscore = -1;//还没批改
//删除已存在的
String deleteSql = "delete from tbAnswerOfPaper where answerid=" + answerOfPaper.answerid + " and arrangeid=" + answerOfPaper.arrangeid + " and userid=" + answerOfPaper.userid;
SqlHelper.ExecuteNonQuery(SqlTransaction, CommandType.Text, deleteSql);
answerOfPaperDAL.AddTran(answerOfPaper, SqlTransaction);
}
}
SqlTransaction.Commit();
}
catch (Exception)
{
try
{
SqlTransaction.Rollback();
}
catch (Exception)
{
//事务回滚出错
}
}
finally
{
//关闭各种资源
SqlTransaction.Dispose();
conn.Close();
}
return standardAnswer;
}
