private void btnKHMoi_Click(object sender, EventArgs e) { using (frmThemKhachHang f = new frmThemKhachHang()) { f.ShowDialog(); } }
private void btnThem_Click(object sender, EventArgs e) { using (frmThemKhachHang f = new frmThemKhachHang()) { f.ShowDialog(); } bdsKhachHang.DataSource = khBUS.LayDanhSach(); }