private void SaveDiscipline()
 {
     if (comboBoxDiscpline.Text != "")
     {
         if (DBobjects.Entities.Discipline.Where(p => p.nameDiscipline == comboBoxDiscpline.Text).Count() == 0)
         {
             discipline = new Discipline();
             discipline.nameDiscipline = comboBoxDiscpline.Text;
             DBobjects.Entities.Discipline.Add(discipline);
             DBobjects.Entities.SaveChanges();
         }
         else
         {
             discipline = DBobjects.Entities.Discipline.FirstOrDefault(p => p.nameDiscipline == comboBoxDiscpline.Text);
         }
         RatingMark ratingMark = new RatingMark();
         ratingMark.idDiscipline = discipline.idDiscipline;
         ratingMark.idJournal    = JournalForm.Journal.idJournal;
         ratingMark.idRating     = DBobjects.Entities.Rating.First().idRating;
         ratingMark.idStudent    = DBobjects.Entities.Student.FirstOrDefault(p => p.idGroup == JournalForm.Journal.idGroup).idStudent;
         ratingMark.ratingMark1  = 0;
         DBobjects.Entities.RatingMark.Add(ratingMark);
         DBobjects.Entities.SaveChanges();
         comboBoxDiscpline.SelectedItem = discipline.nameDiscipline;
         fillDiscipline();
         comboBoxDiscpline.SelectedIndex = comboBoxDiscpline.Items.Count - 1;
     }
 }
 private void SaveRatingMark()
 {
     foreach (DataGridViewRow dgvr in dgvStudentMark.Rows)
     {
         RatingMark ratingMark;
         foreach (Rating rating in DBobjects.Entities.Rating.ToList())
         {
             if (Convert.ToInt32(dgvr.Cells["ID" + rating.nameRating].Value) == 0)
             {
                 ratingMark = new RatingMark();
             }
             else
             {
                 int id = Convert.ToInt32(dgvr.Cells["ID" + rating.nameRating].Value);
                 ratingMark = DBobjects.Entities.RatingMark.FirstOrDefault(p => p.idRatingMark == id);
             }
             ratingMark.idRatingMark = Convert.ToInt32(dgvr.Cells["ID" + rating.nameRating].Value);
             ratingMark.idRating     = rating.idRating;
             ratingMark.idJournal    = JournalForm.Journal.idJournal;
             ratingMark.idStudent    = Convert.ToInt32(dgvr.Cells[0].Value);
             ratingMark.ratingMark1  = Convert.ToInt32(dgvr.Cells[rating.nameRating].Value);
             if (comboBoxDiscpline.Text != "")
             {
                 ratingMark.idDiscipline = DBobjects.Entities.Discipline.FirstOrDefault(p => p.nameDiscipline == comboBoxDiscpline.Text).idDiscipline;
                 if (DBobjects.Entities.RatingMark.Where(p => p.idRatingMark == ratingMark.idRatingMark).Count() == 0)
                 {
                     DBobjects.Entities.RatingMark.Add(ratingMark);
                 }
                 DBobjects.Entities.SaveChanges();
             }
             else
             {
                 MessageBox.Show("Заполните поле дисциплина");
             }
         }
     }
 }