public static void ShowFormTLH(fMain MF)
{
if (_fTLH == null || _fTLH.IsDisposed)
{
_fTLH = new fThemLopHoc();
// _fTLH.RefToMainForm = MF;
_fTLH.MdiParent = MF;
_fTLH.Show();
}
else
{
_fTLH.Activate();
}
}
private void buttonItem19_Click(object sender, EventArgs e)
{
fThemLopHoc them = new fThemLopHoc();
them.Show();
}