private void btnDelete_Click(object sender, EventArgs e) { if (teacherSelected != null) { ITeacherService teacherService = new TeacherService(); string message = String.Empty; if (!teacherService.DeactivateTeacher(teacherSelected.TeacherId, ref message)) { teacherSelected.Deactivated = true; Log("D", "Teachers", teacherSelected); MessageBox.Show("Deactivation of User Failed"); } else { MessageBox.Show("Deactivated succesfully!"); } } }