private void hesaplarıListelemeToolStripMenuItem_Click(object sender, EventArgs e)
{
if (hesapList == null)
{
hesapList = new frm_HesapListele(musteriBanka);
hesapList.MdiParent = this;
hesapList.FormClosed += HesapList_FormClosed;
hesapList.Show();
}
else
{
hesapList.Activate();
}
}
private void HesapList_FormClosed(object sender, FormClosedEventArgs e)
{
hesapList = null;
}