private void quảnLýLoạiMỹPhẩmToolStripMenuItem_Click(object sender, EventArgs e)
{
Loaihang lh = new Loaihang();
if (KiemTraTonTai("Loaihang") == true)
{
lh.Activate();
}
else
{
lh.MdiParent = this;
lh.Show();
}
}
private void btnLoaiMP_Click(object sender, EventArgs e)
{
Loaihang lmp = new Loaihang();
if (KiemTraTonTai("Loaihang") == true)
{
lmp.Activate();
}
else
{
lmp.MdiParent = this;
lmp.Show();
}
}
