public static void ShowFormTKH(fMain MF)
{
if (_fTKH == null || _fTKH.IsDisposed)
{
_fTKH = new fThemKhoaHoc();
// _fTKH.RefToMainForm = MF;
_fTKH.MdiParent = MF;
_fTKH.Show();
}
else
{
_fTKH.Activate();
}
}
private void buttonItem1_Click(object sender, EventArgs e)
{
fThemKhoaHoc objfthemkhoahoc = new fThemKhoaHoc();
objfthemkhoahoc.Show();
}