private void buttonSnimi_Click(object sender, EventArgs e)
        {
            FormUnosNovogStudenta forma2 = new FormUnosNovogStudenta();

            this.Close();
            forma2.Close();
        }
        private void buttonDodaj_Click(object sender, EventArgs e)
        {
            FormUnosNovogStudenta forma2 = new FormUnosNovogStudenta();

            forma2.ShowDialog();
        }