private void kháchHàngToolStripMenuItem_Click(object sender, EventArgs e)
{
Frm_KH_NCC f = new Frm_KH_NCC();
f.Show();
}
private void nhàCungCấpToolStripMenuItem_Click(object sender, EventArgs e)
{
Frm_KH_NCC f = new Frm_KH_NCC();
f.Show();
}