Generating PDF417 from hex about zxing.net HOT 6 CLOSED

the following code snippet should work as expected:

`
[Test]
public void Hex2Pdf417()
{
var hexStr = "fe3009333137303130323031f9200134fe300120fc2006";
var byteArray = Enumerable.Range(0, hexStr.Length / 2).Select(x => Convert.ToByte(hexStr.Substring(x * 2, 2), 16)).ToArray();
var byteArrayAsString = new String(byteArray.Select(b => (char)b).ToArray());

     // encode the string as PDF417
     var writer = new BarcodeWriter
     {
        Format = BarcodeFormat.PDF_417,
        Options = new PDF417EncodingOptions
        {
           Height = 200,
           Width = 200,
           Margin = 10
        }
     };
     var bitmap = writer.Write(byteArrayAsString);

     // try to decode the PDF417
     var reader = new BarcodeReader
     {
        Options = new DecodingOptions
        {
           PossibleFormats = new List<BarcodeFormat>
           {
              BarcodeFormat.PDF_417
           },
           PureBarcode = true
        }
     };
     var result = reader.Decode(bitmap);

     // make sure, the result is the same as the original hex
     var resultBackToBytes = result.Text.Select(c => (byte)c).ToArray();
     var resultAsHexString = String.Join("", resultBackToBytes.Select(b => b.ToString("x2")));

     Assert.That(resultAsHexString, Is.EqualTo(hexStr));
  }

`

from zxing.net.

Both errors are related to version 0.14 of ZXing.Net.
They are fixed in the next version.
Please try the current source code from the repository.

from zxing.net.

The following HEX throws the error:

Non-encodable character detected: (Unicode: 132)

And when i decode the barcode here online-barcode-reader.inliteresearch.com, it shows that the saved HEX data isn't the original HEX. "FE" is saved as "5F".

30303142415243303030FE

from zxing.net.

Please post a complete stack trace of your error ("Non-encodable...").
For me it works like a charm.
And I checked the generated barcode against you online reader and I can't see any wrong value.
Did you really use my method for the conversion from hex to string?

from zxing.net.

Full Error
ZXing.WriterException wurde nicht behandelt.
HResult=-2146233088
Message=Non-encodable character detected: (Unicode: 132)
Source=zxing
StackTrace:
bei ZXing.PDF417.Internal.PDF417HighLevelEncoder.determineConsecutiveBinaryCount(String msg, Byte[] bytes, Int32 startpos) in C:\ZXing.Net.0.14.0.0\Source\lib\pdf417\encoder\PDF417HighLevelEncoder.cs:Zeile 739.
bei ZXing.PDF417.Internal.PDF417HighLevelEncoder.encodeHighLevel(String msg, Compaction compaction, Encoding encoding, Boolean disableEci) in C:\ZXing.Net.0.14.0.0\Source\lib\pdf417\encoder\PDF417HighLevelEncoder.cs:Zeile 258.
bei ZXing.PDF417.Internal.PDF417.generateBarcodeLogic(String msg, Int32 errorCorrectionLevel) in C:\ZXing.Net.0.14.0.0\Source\lib\pdf417\encoder\PDF417.cs:Zeile 682.
bei ZXing.PDF417.PDF417Writer.bitMatrixFromEncoder(PDF417 encoder, String contents, Int32 width, Int32 height, Int32 margin, Int32 errorCorrectionLevel) in C:\ZXing.Net.0.14.0.0\Source\lib\pdf417\PDF417Writer.cs:Zeile 142.
bei ZXing.PDF417.PDF417Writer.encode(String contents, BarcodeFormat format, Int32 width, Int32 height, IDictionary2 hints) in C:\ZXing.Net.0.14.0.0\Source\lib\pdf417\PDF417Writer.cs:Zeile 111. bei ZXing.MultiFormatWriter.encode(String contents, BarcodeFormat format, Int32 width, Int32 height, IDictionary2 hints) in C:\ZXing.Net.0.14.0.0\Source\lib\MultiFormatWriter.cs:Zeile 79.
bei ZXing.BarcodeWriterGeneric1.Encode(String contents) in C:\ZXing.Net.0.14.0.0\Source\lib\BarcodeWriterGeneric.cs:Zeile 72. bei ZXing.BarcodeWriterGeneric1.Write(String contents) in C:\ZXing.Net.0.14.0.0\Source\lib\BarcodeWriterGeneric.cs:Zeile 86.
bei Weiss.Form1.GeneratePDF417(String hexStr) in C:\Users\xxx\Desktop\xxx\xxx\xxx\xxx\Form1.cs:Zeile 696.
bei Weiss.Form1.GetWeiss() in C:\Users\xxx\Desktop\xxx\xxx\xxx\xxx\Form1.cs:Zeile 159.
bei Weiss.Form1..ctor() in C:\Users\xxx\Desktop\xxx\xxx\xxx\xxx\Form1.cs:Zeile 21.
bei Weiss.Program.Main() in C:\Users\xxx\Desktop\xxx\xxx\xxx\xxx\Program.cs:Zeile 19.
bei System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
bei System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
bei Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
bei System.Threading.ThreadHelper.ThreadStart_Context(Object state)
bei System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
bei System.Threading.ThreadHelper.ThreadStart()
InnerException:

Code:
var bitmap = writer.Write(byteArrayAsString); (throws the error)

` private byte[] GeneratePDF417(string hexStr)
{
hexStr = "30303142415243303030";
var byteArray = Enumerable.Range(0, hexStr.Length / 2).Select(x => Convert.ToByte(hexStr.Substring(x * 2, 2), 16)).ToArray();
var byteArrayAsString = new String(byteArray.Select(b => (char)b).ToArray());
var writer = new BarcodeWriter
{
Format = BarcodeFormat.PDF_417,
Options = new PDF417EncodingOptions
{
Height = 200,
Width = 200,
Margin = 10
}
};
var bitmap = writer.Write(byteArrayAsString);

        using (var stream = new MemoryStream())
        {
            bitmap.Save(stream, ImageFormat.Png);
            return stream.ToArray();
        }
    }`

from zxing.net.

Thanks a lot! It's working perfectly with the current version from the source code!

from zxing.net.