private void finish_Click(object sender, EventArgs e) { OnlineExam exam = new OnlineExam(); checkIfNotFirstExam(); foreach (var item in StudentAnswersSheet) { exam.Insert_Std_Answer(studentID, examID, item.Key, item.Value); } var res = exam.Calc_Student_Exam_Grade(studentID, examID).First(); deletePrevGradeIfExist(); exam.saveStudentGrade(studentID, examID, res.grade); MessageBox.Show($"Your Grade {res.grade}, and Degree {res.student_answer_degrees}", "Your Resault"); StudentDashbord dashbord = new StudentDashbord(studentID); this.Close(); dashbord.Show(); }