private void btn_update_Click(object sender, EventArgs e)
{
var specialityService = new SpecialityService(_unit, _unit);
var speciality = specialityService.GetSpecialityById(_entityId);
speciality.Name = NameText;
speciality.TermNumber = TermNumberText;
specialityService.SetFormEducationOfSpeciality((FormEducation)comboBox1.SelectedItem, speciality);
specialityService.UpdateSpeciality(speciality);
_unit.Commit();
_context.Dispose();
this.Close();
}
