private void bAddPrivTalc_Click(object sender, EventArgs e)
 {
     dgvTopicTalc.ClearSelection();
     privateTalk            = new PrivateTalk();
     privateTalk.datePrTalk = DateTime.Now.Date;
     privateTalk.idJournal  = JournalForm.Journal.idJournal;
     buttonDelete.Visible   = false;
     panelFill();
     FillTalkStudent();
 }
 private void dgvTopicTalc_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)
 {
     if (e.RowIndex >= 0)
     {
         privateTalk = (PrivateTalk)dgvTopicTalc.Rows[e.RowIndex].DataBoundItem;
         panelFill();
         buttonDelete.Visible = true;
         FillTalkStudent();
     }
 }