private void btnQLKhoa_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
Form frm = kiemtraform(typeof(QLKhoaHoc));
if (frm == null)
{
QLKhoaHoc forms = new QLKhoaHoc();
forms.MdiParent = this;
forms.Show();
}
else
{
frm.Activate();
}
}
private void menuQLKH_Click(object sender, EventArgs e)
{
QLKhoaHoc frm = new QLKhoaHoc();
frm.Show();
}