public void Agregar(int rtn) { Proveedorclas prov = new Proveedorclas(); prov.rtn = 1; Lista.Add(prov); }
private void button1_Click(object sender, EventArgs e) { Proveedorclas provv = new Proveedorclas(); ProveedoresBL pro = new ProveedoresBL(); var rtn = int.Parse(textBox1.Text); pro.Agregar(rtn); dataGridView1.DataSource = provv.rtn; }