private void btnSiparis_Click(object sender, EventArgs e)
{
frmSiparis siparis = new frmSiparis();
this.Hide();
siparis.Show();
}
private void lvlMasalar_MouseDoubleClick(object sender, MouseEventArgs e)
{
masa_adi = lvMasalar.SelectedItems[0].SubItems[0].Text;
masa_id = lvMasalar.SelectedItems[0].SubItems[1].Text;
frmSiparis frmSiparis = new frmSiparis();
this.Hide();
frmSiparis.Show();
}