BarcodeSettings.OnlyRequestedTypes

BarcodeSettings.OnlyRequestedTypes property

Returns only barcode types explicitly specified for recognition. When enabled, recognized barcodes of other compatible or equivalent types are filtered out. Default value is false.

public bool OnlyRequestedTypes { get; set; }

Property Value

Returns only barcode types explicitly specified for recognition. Default value is false.

Examples

This sample shows how to restrict recognition results to requested barcode types only

[C#]
//generate EAN13 barcode
using (BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.EAN13, "2383823482894"))
    generator.Save(@"c:\test.png");
//recognize only UPCA barcodes (no results, because source is EAN13)
using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.UPCA))
{
    reader.BarcodeSettings.OnlyRequestedTypes = true;
    foreach (BarCodeResult result in reader.ReadBarCodes())
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
}
//recognize compatible types: EAN13, UPCA, ISSN, ISMN, ISBN (EAN13 will be returned as UPCA-equivalent)
using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.UPCA))
{
    reader.BarcodeSettings.OnlyRequestedTypes = false;
    foreach (BarCodeResult result in reader.ReadBarCodes())
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
}

See Also

BarcodeSettings.DetectEncoding BarcodeSettings.StripFNC