private void hesapAçmaToolStripMenuItem_Click(object sender, EventArgs e)
{
if (HesapAcma == null)
{
HesapAcma = new frm_HesapAcma(musteriBanka);
HesapAcma.MdiParent = this;
HesapAcma.FormClosed += HesapAcma_FormClosed;
HesapAcma.Show();
}
}
private void HesapAcma_FormClosed(object sender, FormClosedEventArgs e)
{
HesapAcma = null;
}