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Returns the size of the top quiet zone.
The quiet zone is the blank margin above the barcode symbol.
int QuietZoneTop { get; }
ReadOnly Property QuietZoneTop As Integer
worksheet.Range["A1"].Formula = "=BC_QRCODE(\"https://www.example.com\",\"rgb(0, 0, 0)\",\"rgb(255, 255, 255)\",\"L\",2,\"auto\",\"auto\",FALSE,0,,\"UTF-8\",1,2,3,4)";
IBarcode barcode = (IBarcode) worksheet.Range["A1"].Value;
int quietZoneTop = barcode.QuietZoneTop;