private void müşteriToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (musteri == null)
{
musteri = new frm_Musteriler(mainBank);
musteri.MdiParent = this;
musteri.FormClosed += Mus_FormClosed;
musteri.Show();
}
else
{
musteri.Activate();
}
}
private void Mus_FormClosed(object sender, FormClosedEventArgs e)
{
musteri = null;
}
