private void btn_assert_Click(object sender, EventArgs e)
{
exam_statistic_id = Convert.ToInt32(dgv_exam_statistic.SelectedRows[0].Cells[0].Value);
DAL.ExamResult dal = new DAL.ExamResult();
tb_average.Text = dal.get_ExamResult_statistic_info_avg(exam_statistic_id).Rows[0][0].ToString();
tb_highest.Text = dal.get_ExamResult_statistic_info_max(exam_statistic_id).Rows[0][0].ToString();
tb_last.Text = dal.get_ExamResult_statistic_info_min(exam_statistic_id).Rows[0][0].ToString();
tb_oknumber.Text = dal.get_ExamResult_statistic_info(exam_statistic_id, 100, 60).Rows[0][0].ToString();
chart();
}
void chart()
{
chart_exam.Series.Clear();
DAL.ExamResult dal = new DAL.ExamResult();
Series Strength = new Series("人数");
Strength.Points.AddXY("60以下", Convert.ToInt32(dal.get_ExamResult_statistic_info(exam_statistic_id, 60, 0).Rows[0][0]));
Strength.Points.AddXY("60-70", Convert.ToInt32(dal.get_ExamResult_statistic_info(exam_statistic_id, 60, 0).Rows[0][0]));
Strength.Points.AddXY("70-80", Convert.ToInt32(dal.get_ExamResult_statistic_info(exam_statistic_id, 80, 70).Rows[0][0]));
Strength.Points.AddXY("80-90", Convert.ToInt32(dal.get_ExamResult_statistic_info(exam_statistic_id, 90, 80).Rows[0][0]));
Strength.Points.AddXY("90-100", Convert.ToInt32(dal.get_ExamResult_statistic_info(exam_statistic_id, 100, 90).Rows[0][0]));
chart_exam.Series.Add(Strength);
}
