private void btnAdd_Click(object sender, EventArgs e) { currentStudent = currentStudent ?? new StudentModel(); currentStudent.StudentId = int.Parse(maskedStdId.Text); currentStudent.StudentName = txtName.Text; currentStudent.Course = cmbCourse.SelectedItem.ToString(); currentStudent.Picture = pbStudentImage.Image; if (rbFirst.Checked) { currentStudent.Year = 1; } if (rbSecond.Checked) { currentStudent.Year = 2; } if (rbThird.Checked) { currentStudent.Year = 3; } if (rbFour.Checked) { currentStudent.Year = 4; } bool updated = false; if (currentStudent.Id == 0) { updated = studentTable.InsertStudent(currentStudent); } else { updated = studentTable.UpdateStudent(currentStudent); } if (updated) { MessageBox.Show(" Information Added successfully..."); resetForm(); } else { MessageBox.Show("Some Error Occurred."); } }