private void MM_pack_Click(object sender, EventArgs e)
{
if (mp == null)
{
mp = new ManagePackage();
mp.MdiParent = this;
mp.FormClosed += new FormClosedEventHandler(Mp_FormClosed);
mp.Show();
}
else
{
mp.Activate();
}
}
private void Mp_FormClosed(object sender, FormClosedEventArgs e)
{
mp = null;
}
