private void kelolaUserToolStripMenuItem_Click(object sender, EventArgs e)
{
if (usermanager == null)
{
usermanager = new usermanager();
usermanager.MdiParent = this.MdiParent;
usermanager.FormClosed += new FormClosedEventHandler(Usermanager_FormClosed);
usermanager.Show();
}
else
{
usermanager.Activate();
}
}
private void Usermanager_FormClosed(object sender, FormClosedEventArgs e)
{
usermanager = null;
}