IndexOutOfBoundsException with german umlauts

Post by Document Partner » Thu Sep 08, 2011 12:19 PM

Hi,

I get an exception " Index was outside the bounds of the array." when trying to encode an Aztec symbol with german umlauts.
Here is the C# code I am using:

      var barcodeWriter = new Vintasoft.Barcode.BarcodeWriter ();
      barcodeWriter.Settings.Barcode = Vintasoft.Barcode.BarcodeType.Aztec;
      barcodeWriter.Settings.ProcessSpecialSymbols = true;

      var valueItems = new List<ValueItemBase> ();
      valueItems.Add (new TextValueItem (@"German
  AГ„BCDEFGHIJKLMNOГ–PQRSГџTUГњVWXYZ
  aГ¤bcdefghijklmnoГ¶pqrsГџtuГјvwxyz"));

      barcodeWriter.Settings.ValueItems = valueItems.ToArray ();
      var outputImage = barcodeWriter.GetBarcodeAsBitmap ();

      return outputImage;

kind regards,
Roman Brandstetter

Re: IndexOutOfBoundsException with german umlauts

Post by Yuri » Fri Sep 09, 2011 06:50 AM

Hi,

TextValueItem may contain only symbols which are allowed for encoding in text mode.

The symbols like Г„, Г–, Гњ and Гџ should be encoded in binary mode.

Utilize automatic selection of encoding mode by setting barcodeWriter.Settings.Value property at necessary value.

The following code illustrate how your text is automatically devided on 17 items for its correct encoding further:

var barcodeWriter = new Vintasoft.Barcode.BarcodeWriter();
barcodeWriter.Settings.Barcode = Vintasoft.Barcode.BarcodeType.Aztec;

barcodeWriter.Settings.Value =
"GermanAГ„BCDEFGHIJKLMNOГ–PQRSГџTUГњVWXYZaГ¤bcdefghijklmnoГ¶pqrsГџtuГјvwxyz";
var outputImage = barcodeWriter.GetBarcodeAsBitmap();

// TEST (read)
var barcodeReader = new BarcodeReader();
barcodeReader.Settings.ScanBarcodeTypes = barcodeWriter.Settings.Barcode;

IBarcodeInfo barcodeInfo = barcodeReader.ReadBarcodes(outputImage)[0];

if (barcodeWriter.Settings.Value != barcodeInfo.Value)
    throw new ArgumentException();

foreach (ValueItemBase valueItem in barcodeInfo.ValueItems)
    Console.WriteLine(string.Format("[{0}] {1}", valueItem.GetType().Name,
valueItem));

--
Sincerely, Yuri

Re: IndexOutOfBoundsException with german umlauts

Post by Document Partner » Fri Sep 09, 2011 07:15 AM

Hi,

Thanks for the info. The Code is working now.

kind regards,
Roman

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