private void FDanhMucSanPham_Load(object sender, EventArgs e) { listView1.Items.Clear(); DAO_DanhMucSanPham dao = new DAO_DanhMucSanPham(); List <DTO_DanhMucSanPham> list = new List <DTO_DanhMucSanPham>(); list = dao.Load(); foreach (var item in list) { ListViewItem it = new ListViewItem(item.ID.ToString()); it.SubItems.Add(item.Tendanhmuc); listView1.Items.Add(it); } }