private void kelolaPelangganToolStripMenuItem_Click(object sender, EventArgs e)
{
if (dataPelanggan == null)
{
DataPelanggan dataPelanggan = new DataPelanggan();
dataPelanggan.MdiParent = this.MdiParent;
dataPelanggan.FormClosed += new FormClosedEventHandler(DataPelanggan_FormClosed);
dataPelanggan.Show();
}
else
{
dataPelanggan.Activate();
}
}
private void DataPelanggan_FormClosed(object sender, FormClosedEventArgs e)
{
dataPelanggan = null;
}
