private void btnSaleHist_Click(object sender, EventArgs e)
{
POS fpos = new POS();
formSoldItems frm = new formSoldItems(fpos);
frm.ShowDialog();
}
private void btnSales_Click(object sender, EventArgs e)
{
formSoldItems frm = new formSoldItems(this);
frm.dt1.Enabled = false;
frm.dt2.Enabled = false;
frm.cboCashier.Enabled = false;
frm.cboCashier.Text = lblName.Text.Substring(0, lblName.Text.IndexOf(" |"));
frm.ShowDialog();
}