public async Task <bool> GenQRAsync1(IEnumerable <ReceiptWares> pW)
{
bool res = true;
if (!Global.IsGenQrCoffe)
{
return(res);
}
int Number = 0;
foreach (var el in pW.Where(r => r.PLU > 0))
{
StringBuilder QRs = new StringBuilder();
for (int i = 0; i < el.Quantity; i++)
{
var QR = await ds.GetQrCoffe(el, Number ++);
QRs.Append((QRs.Length > 0 ? "," : "") + QR);
}
el.QR = QRs.ToString();
res &= db.UpdateQR(el);
}
return(res);
}