VintaSoft Barcode .NET SDK Discussions

public static void Test()
{
    Encoding iso88591 = Encoding.GetEncoding(28591);
    Encoding iso88595 = Encoding.GetEncoding(28595);
    Encoding iso88592 = Encoding.GetEncoding(28592);
    Encoding big5 = Encoding.GetEncoding(950);

    // create the barcode value
    List<ValueItemBase> items = new List<ValueItemBase>();
    EncodeText(items, "ążśźęćń󳥯ŚŹĘĆŃÓŁ", iso88592);
    EncodeText(items, "АБВГДЕЖЗИЙКЛМНОП", iso88595);
    EncodeText(items, "分切刈勻勾勿化匹午升卅卞厄友及反", big5);
    EncodeText(items, "test!", iso88591);

    // write the barcode
    BarcodeWriter writer = new BarcodeWriter();
    writer.Settings.Barcode = BarcodeType.DataMatrix;
    writer.Settings.ValueItems = items.ToArray();
    Bitmap bmp = writer.GetBarcodeAsBitmap();

    // read the barcode
    BarcodeReader reader = new BarcodeReader();
    reader.Settings.ScanBarcodeTypes = BarcodeType.DataMatrix;
    ValueItemBase[] readItems = reader.ReadBarcodes(bmp)[0].ValueItems;

    // parse the barcode value
    string value = ParseBarcodeValue(readItems);

    // check the barcode value
    if (value != 
        "ążśźęćń󳥯ŚŹĘĆŃÓŁ" + 
        "АБВГДЕЖЗИЙКЛМНОП" + 
        "分切刈勻勾勿化匹午升卅卞厄友及反" + 
        "test!")
        throw new ApplicationException();
}

// Encodes text using specified encoding.
private static void EncodeText(List<ValueItemBase> items, string value, Encoding encoding)
{
    int eciNumber = GetEciNumber(encoding);

    // add ECI character
    items.Add(NonDataFlags.CreateECICharacter(GetEciNumber(encoding)));

    // string -> bytes
    byte[] bytes = encoding.GetBytes(value);

    // bytes -> text
    char[] textChars = new char[bytes.Length];
    for (int i = 0; i < textChars.Length; i++)
        textChars[i] = (char)bytes[i];

    // create and add text value item
    items.Add(new TextValueItem(new string(textChars)));
}

// Parses the barcode value with ECI characters.
private static string ParseBarcodeValue(ValueItemBase[] items)
{
    StringBuilder result = new StringBuilder();
    // default encoding
    Encoding currentEncoding = GetEncoding(3);
    // for each value item
    for (int i = 0; i < items.Length; i++)
    {
        if (items[i] is ECICharacterValueItem)
        {
            // change current encoding
            currentEncoding = GetEncoding(((ECICharacterValueItem)items[i]).ECIAssignmentNumber);
            continue;
        }
        // decode text value item
        string text = ((TextValueItem)items[i]).Value;
        byte[] bytes = new byte[text.Length];
        for (int j = 0; j < text.Length; j++)
            bytes[j] = (byte)text[j];
        result.Append(currentEncoding.GetString(bytes));
    }
    return result.ToString();
}

// Gets the ECI number for specified encoding.
private static int GetEciNumber(Encoding encoding)
{
    switch (encoding.CodePage)
    {
        case 28591:
            return 3;
        case 28592:
            return 4;
        case 28595: 
            return 7;
        case 950: 
            return 28;
    }
    throw new NotImplementedException();
}

// Gets the Encoding for specified ECI number.
private static Encoding GetEncoding(int eciNumber)
{
    switch (eciNumber)
    {
        case 3:
            return Encoding.GetEncoding(28591);
        case 4:
            return Encoding.GetEncoding(28592);
        case 7:
            return Encoding.GetEncoding(28595);
        case 28:
            return Encoding.GetEncoding(950);
    }
    throw new NotImplementedException();
}