private void btnUcitajProdavca_Click(object sender, EventArgs e)
 {
     try
     {
         ISession            s = DataLayer.GetSession();
         ProdavacFizickoLice f = s.Load <ProdavacFizickoLice>(8);
         ProdavacPravnoLice  p = s.Load <ProdavacPravnoLice>(7);
         MessageBox.Show(f.JMBG + Environment.NewLine + p.PIB);
     }
     catch (Exception ec)
     {
         MessageBox.Show(ec.Message);
     }
 }
        private void btnDodajProdavca_Click(object sender, EventArgs e)
        {
            try
            {
                ISession            s = DataLayer.GetSession();
                ProdavacFizickoLice f = new ProdavacFizickoLice();
                f.JMBG = "1011997745045";
                s.Save(f);

                MessageBox.Show(f.JMBG + Environment.NewLine + f.ID.ToString());

                ProdavacPravnoLice p = new ProdavacPravnoLice();
                p.PIB = "182546";
                s.Save(p);
                MessageBox.Show(p.PIB + Environment.NewLine + p.ID.ToString());

                s.Flush();
                s.Close();
            }
            catch (Exception ec)
            {
                MessageBox.Show(ec.Message);
            }
        }