private void dgvKhachHang_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
int viTri = e.RowIndex;
XuLy.CellClickBangKhachHang(txtCMT, txtTenKH, txtSDT, txtDiaChi,
rdbNam, rdbNu, dtpNgaySinh, dgvKhachHang, viTri);
}