public BarcodeReadOptions Options { get; }
@property (nonatomic, strong, readonly, nullable) LTBarcodeReadOptions *options
public BarcodeReadOptions getOptions()
public:
property BarcodeReadOptions^ Options {
BarcodeReadOptions^ get();
}
Options # get (BarcodeReadSymbologyEventArgs)
An BarcodeReadOptions or one of its derived classes that specifies the options being used to read the symbologies.
Options could be the options passed through the read methods or the default options set in BarcodeReader. If Status is BarcodeReadSymbologyStatus.PreRead, then you can modify this object in the event handler if required. The BarcodeReader will use this object to perform the read operation.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;
public void BarcodeReader_ReadSymbologyExample()
{
string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "Barcode1.tif");
// Create a Barcode engine
BarcodeEngine engine = new BarcodeEngine();
// Get the Barcode reader instance
BarcodeReader reader = engine.Reader;
// Load the image
using (RasterCodecs codecs = new RasterCodecs())
{
using (RasterImage image = codecs.Load(imageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1))
{
// Subscribe to the ReadSymbology event
reader.ReadSymbology += new EventHandler<BarcodeReadSymbologyEventArgs>(reader_ReadSymbology);
// Read all barcodes in the image
reader.ReadBarcodes(image, LeadRect.Empty, 0, null);
reader.ReadSymbology -= new EventHandler<BarcodeReadSymbologyEventArgs>(reader_ReadSymbology);
}
}
}
private void reader_ReadSymbology(object sender, BarcodeReadSymbologyEventArgs e)
{
if (e.Operation == BarcodeReadSymbologyOperation.PreRead)
{
// Before reading, show the symbologies the engine is going to try to read
Console.WriteLine("Trying to read the following symbologies:");
BarcodeSymbology[] symbologies = e.GetSymbologies();
for (int i = 0; i < symbologies.Length; i++)
{
Console.Write(symbologies[i]);
if (i != (symbologies.Length - 1))
{
Console.Write(", ");
Console.WriteLine(e.Options.FriendlyName);
}
else
{
Console.WriteLine();
}
}
}
else if (e.Operation == BarcodeReadSymbologyOperation.PostRead)
{
if (e.Error == null)
{
// No errors
BarcodeData barcode = e.Data;
if (barcode != null)
{
// Found a barcode, show it
Console.WriteLine(" {0} at {1} with data {2}", barcode.Symbology, barcode.Bounds, barcode.Value);
}
else
{
Console.WriteLine(" No barcodes found");
}
}
else
{
// Show the error
Console.WriteLine("Error: {0}", e.Error.Message);
// Tell the reader top stop reading barcodes
e.Status = BarcodeReadSymbologyStatus.Abort;
}
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
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