BarcodeDecoder barcodeDecoder = new BarcodeDecoder();
barcodeDecoder.BarcodeTypes = (int)EBarcodeTypes.DataMatrix;
barcodeDecoder.DecodeFile(textBox1.Text);

BarcodeList BarcodeList = barcodeDecoder.Barcodes;
for (int i = 0; i < BarcodeList.length; i++)
{
    barcode barcode = BarcodeList.item(i);
    string sResult = string.Format("{0}\n", barcode.BarcodeType.ToString());
    MessageBox.Show(sResult);
}

CDecoderWrap dec;
dec.InitLib(0);

//set decoder parameters
DW_DECODEPARAMS decParams;
decParams.barcodeTypes |= DW_ST_QRCODE|DW_ST_PDF417|DW_ST_AZTECCODE|DW_ST_DATAMATRIX;
dec.SetDecoderParams( decParams );

//Decode file
int res = dec.Decode( &vBuf[0], vBuf.size(), 0 );
if( res == DW_OK )
{
    int num=0;
    res = dec.getResNum( &num );
    for( int i=0; i < num; ++i )
    {
            //...output result
    }
}

BarcodeReaderWrapper dec = new BarcodeReaderWrapper();
dec.InitLib("");

//set decoder parameters
DecoderParameters dp = new DecoderParameters();
dp.barcodeTypes |= DecoderParameters.ST_CODE128|DecoderParameters.ST_DATAMATRIX;
dec.SetParams(dp);

//read PGM file
byte[] data = Files.readAllBytes(path);

//Scan Barcodes
DecodingResult res[] = dec.DecodePgm(data, 0, 0, 0, 0);
for(int j=0; res!=null && j < res.length; ++j)
{
    String sBarcode = new String( res[j].data, 0, res[j].data.length );
    System.out.println(sBarcode);
}

window.onload = function () {
    var scannerSettings = {
        viewport: {
            id: 'datasymbol-barcode-viewport',
            width: 500,
        },
        camera: {
            resx: 640,
        },
        barcode: {
            barcodeTypes: ['EAN13', 'UPCA', 'Code128', 'DataMatrix', 'QRCode'],
        },
    };

    DSScanner.addEventListener('onError', onError);
    DSScanner.addEventListener('onBarcode', onBarcodeReady);

    DSScanner.addEventListener('onScannerReady', function () {
        DSScanner.StartScanner();
    });

    DSScanner.Create(scannerSettings);
}

<script async>
        onDataSymbolBarcode = function( decodingResult ) {
            for (var i = 0; i < decodingResult.length; ++i)
                alert( DSbin2String(decodingResult[i]) );
        };
    </script>

    <script async id="DataSymbolScript" src="https://websdk.datasymbol.com/srvhost/v2/scanner.js"></script>

    //Learn More: www.BarcodeVision.com