public static void ShowFormSLH(fMain MF)
{
if (_fSLH == null || _fSLH.IsDisposed)
{
_fSLH = new fSuaLopHoc();
// _fTKH.RefToMainForm = MF;
_fSLH.MdiParent = MF;
_fSLH.Show();
}
else
{
_fSLH.Activate();
}
}
private void buttonItem20_Click(object sender, EventArgs e)
{
fSuaLopHoc slop = new fSuaLopHoc();
slop.Show();
}