private void button3_Click(object sender, EventArgs e) { dgvStore.Rows.Clear(); String name = cbxDepartament.SelectedItem.ToString(); List <Store> stores = storeLogic.getStoreByDepartament(name); foreach (var item in stores) { dgvStore.Rows.Add(item.id_store, item.phone, item.detail_ubication.address, item.detail_ubication.municipality.name_municipality, item.detail_ubication.municipality.departament.name_departament); } }