private void satışıYapılanÜrünlerToolStripMenuItem_Click(object sender, EventArgs e)
{
SatisSor satis = new SatisSor();
satis.Show();
satis.MdiParent = this;
}
private void btnSatisSor_Click(object sender, EventArgs e)
{
if (Application.OpenForms["SatisSor"] == null)
{
satissor = new SatisSor();
satissor.Show();
}
else
{
satissor.Activate();
}
}