public override BarcodeSymbology Symbology { get; set; }
An BarcodeSymbology enumeration member that specifies the barcode symbology (type) associated with this QRBarcodeData.
This property overrides the base BarcodeData.Symbology and will always return BarcodeSymbology.QR. Attempting to set this property to any other symbology value is illegal and will result in an ArgumentException being thrown.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;
public void QRBarcode_Example()
{
string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyQRBarcodes.tif");
BarcodeEngine engine = new BarcodeEngine();
// Create the image to write the barcodes to
int resolution = 300;
using (RasterImage image = RasterImage.Create((int)(8.5 * resolution), (int)(11.0 * resolution), 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White)))
{
// Write two QR barcodes
WriteBarcode(engine.Writer, image, QRBarcodeSymbolModel.Model1AutoSize, "QR Data 1", false);
WriteBarcode(engine.Writer, image, QRBarcodeSymbolModel.Model2Version30, "QR Data 2", true);
// Save the image
using (RasterCodecs codecs = new RasterCodecs())
{
codecs.Save(image, imageFileName, RasterImageFormat.CcittGroup4, 1);
}
}
// Now read the barcodes again
using (RasterCodecs codecs = new RasterCodecs())
{
using (RasterImage image = codecs.Load(imageFileName))
{
// Read all the QR barcodes
ReadBarcodes(engine.Reader, image);
}
}
}
private void WriteBarcode(BarcodeWriter writer, RasterImage image, QRBarcodeSymbolModel symbolModel, string value, bool topLeft)
{
// Create the barcode data
QRBarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.QR) as QRBarcodeData;
barcode.SymbolModel = symbolModel;
barcode.Value = value;
barcode.Symbology = BarcodeSymbology.QR;
// We will use the alignment to position the barcodes, so use all of the image
barcode.Bounds = new LeadRect(0, 0, image.ImageWidth, image.ImageHeight);
// Set the write options
QRBarcodeWriteOptions options = new QRBarcodeWriteOptions();
if (topLeft)
{
options.HorizontalAlignment = BarcodeAlignment.Near;
options.VerticalAlignment = BarcodeAlignment.Near;
}
else
{
options.HorizontalAlignment = BarcodeAlignment.Far;
options.VerticalAlignment = BarcodeAlignment.Far;
}
options.GroupNumber = 0;
options.GroupTotal = 0;
options.XModule = 30;
options.ECCLevel = QRBarcodeECCLevel.LevelL;
// Write it
Console.WriteLine("Writing barcode with symbol model: {0} and Data: {1}", symbolModel, value);
writer.WriteBarcode(image, barcode, options);
}
private void ReadBarcodes(BarcodeReader reader, RasterImage image)
{
// Setup read options
QRBarcodeReadOptions options = new QRBarcodeReadOptions();
options.EnableDoublePass = false;
options.EnableDoublePassIfSuccess = true;
options.EnablePreprocessing = true;
Console.WriteLine("Reading QR barcodes");
BarcodeData[] barcodes = reader.ReadBarcodes(image, LeadRect.Empty, 0, new BarcodeSymbology[] { BarcodeSymbology.QR }, new BarcodeReadOptions[] { options });
Console.WriteLine("{0} barcodes found:", barcodes.Length);
foreach (QRBarcodeData barcode in barcodes)
{
string value = BarcodeData.ParseECIData(barcode.GetData());
if (string.IsNullOrEmpty(value))
value = barcode.Value;
Console.WriteLine(" At {0}, symbol model: {1} data: {2} and symbology: {3}", barcode.Bounds, barcode.SymbolModel, value, barcode.Symbology);
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}