private void laporanDistributorToolStripMenuItem_Click(object sender, EventArgs e)
{
if (distri == null)
{
distri = new L_distri();
distri.MdiParent = this;
distri.FormClosed += new FormClosedEventHandler(L_distri_Closed);
distri.Show();
}
else
{
distri.Activate();
}
}
void L_distri_Closed(object sender, FormClosedEventArgs e)
{
distri = null;
}