private void quảnLýMỹPhẩmToolStripMenuItem1_Click(object sender, EventArgs e)
{
MyPham mp = new MyPham();
if (KiemTraTonTai("MyPham") == true)
{
mp.Activate();
}
else
{
mp.MdiParent = this;
mp.Show();
}
}
private void btnThongKe_Click(object sender, EventArgs e)
{
MyPham tk = new MyPham();
if (KiemTraTonTai("MyPham") == true)
{
tk.Activate();
}
else
{
tk.MdiParent = this;
tk.Show();
}
}