private void btnSua_Click(object sender, EventArgs e) { Arena arena = new Arena(); for (int i = 0; i < gridView1.RowCount; i++) { arena.MaKV = (gridView1.GetRowCellValue(i, "MAKV").ToString()); arena.TenKV = gridView1.GetRowCellValue(i, "TENKV").ToString(); KhuVucBUS.Update(arena); } XtraMessageBox.Show("Sửa thành công", "thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information); frmKhuVuc_Load(sender, e); }