private void customersToolStripMenuItem_Click(object sender, EventArgs e)
{
QuanLyKhachhang quanLyKhachhang = new QuanLyKhachhang();
addForm(quanLyKhachhang);
}
private void btnQLKH_Click(object sender, EventArgs e)
{
QuanLyKhachhang quanLyKhachhang = new QuanLyKhachhang();
quanLyKhachhang.Show();
}
