private void listBox1_SelectedIndexChanged(object sender, EventArgs e) { Vevo vevo = (Vevo)listBox1.SelectedItem; var rendelések = from x in context.Rendeles where x.VevoFK == vevo.VevoSK orderby x.Rend_datum select x; listBox2.DataSource = rendelések.ToList(); }
private void button1_Click(object sender, EventArgs e) { Form2 f2 = new Form2(); if (f2.ShowDialog() == DialogResult.OK) { Vevo v = new Vevo(); v.Teljes_nev = f2.textBoxNev.Text; v.Eletkor = int.Parse(f2.textBoxEletkor.Text); vevoBindingSource.Add(v); context.SaveChanges(); } }