void cne_FormClosed(object sender, FormClosedEventArgs e)
{
cne = null;
}
private void createToolStripMenuItem_Click_1(object sender, EventArgs e)
{
if (cne == null)
{
cne = new CreateNewEmployee();
cne.MdiParent = this;
cne.FormClosed += cne_FormClosed;
cne.Show();
}
else
{
cne.Activate();
}
}