private void buttonUploadQuiz_Click(object sender, EventArgs e)
        {
            string fullName    = comboBoxSelectCourse.Text;
            string nameCourse  = fullName.Remove(fullName.Length - 2, 2);
            string nameSection = comboBoxSelectCourse.Text;

            nameSection = "" + nameSection[fullName.Length - 1];

            string selectedId = comboBoxSelectStudent.Text;

            selectedId = selectedId.Substring(0, selectedId.IndexOf(" ")).Trim();

            CourseResults cr = new CourseResults();

            cr.CourseName = nameCourse;
            cr.Section    = nameSection;
            cr.Semester   = comboBoxSelectSemester.Text;
            cr.AccountId  = selectedId;
            cr.Quiz       = (double)numericUpDownUploadQuizMark.Value;
            cr.Term       = 0;
            cr.FinalMark  = 0;
            cr.Grade      = 0;
            cr.Status     = "Active";

            CourseResultsRepository crr = new CourseResultsRepository();

            if (crr.UpdateQuizMark(cr))
            {
                MessageBox.Show("Quiz Mark uploaded Successfully");
            }
            else
            {
                MessageBox.Show("OOPS !!! Something went wr");
            }
        }