public BarcodeSearchDirection SearchDirection { get; set; }
@property (nonatomic, assign) LTBarcodeSearchDirection searchDirection;
public BarcodeSearchDirection getSearchDirection()
public void setSearchDirection(BarcodeSearchDirection value)
public:
property BarcodeSearchDirection SearchDirection {
BarcodeSearchDirection get();
void set ( BarcodeSearchDirection );
}
SearchDirection # get and set (FourStateBarcodeReadOptions)
A BarcodeSearchDirection enumeration member that indicates the direction to use when searching for barcodes. The default value is BarcodeSearchDirection.Horizontal.
The BarcodeReader class can search for barcodes in the image, horizontally or vertically. By default, the reader will only search for barcodes horizontally as it has performance advantages. Alter this by changing the appropriate read barcode options to specify vertical or both (horizontal and vertical) search direction.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;
public void FourStateBarcode_Example()
{
string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyFourStateBarcodes.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 a few Four-State barcodes, a USPS, Royal Mail and Australian Post
WriteBarcode(engine.Writer, image, BarcodeSymbology.USPS4State, "0123456709498765432101234567891", new LeadRect(10, 100, 400, 200));
WriteBarcode(engine.Writer, image, BarcodeSymbology.RoyalMail4State, "123456789", new LeadRect(10, 500, 400, 200));
WriteBarcode(engine.Writer, image, BarcodeSymbology.AustralianPost4State, "11-12345678", new LeadRect(10, 900, 400, 200));
// 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 the USPS barcode
ReadBarcodes(engine.Reader, image, BarcodeSymbology.USPS4State);
// Read the Royal Mail barcode
ReadBarcodes(engine.Reader, image, BarcodeSymbology.RoyalMail4State);
// Read the Australian Post barcode
ReadBarcodes(engine.Reader, image, BarcodeSymbology.AustralianPost4State);
}
}
}
private void WriteBarcode(BarcodeWriter writer, RasterImage image, BarcodeSymbology symbology, string value, LeadRect bounds)
{
// Create the barcode data
BarcodeData barcode = new BarcodeData(symbology, value);
barcode.Bounds = bounds;
// Set the write options
FourStateBarcodeWriteOptions options = new FourStateBarcodeWriteOptions();
options.TextPosition = BarcodeOutputTextPosition.Default;
options.XModule = 30;
options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable;
// Write it
Console.WriteLine("Writing {0} barcode with data: {1}", symbology, value);
writer.WriteBarcode(image, barcode, options);
}
private void ReadBarcodes(BarcodeReader reader, RasterImage image, BarcodeSymbology symbology)
{
// Setup read options
FourStateBarcodeReadOptions options = new FourStateBarcodeReadOptions();
options.SearchDirection = BarcodeSearchDirection.Horizontal;
options.Granularity = 9;
options.ReturnCheckDigit = BarcodeReturnCheckDigit.Default;
options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable;
Console.WriteLine("Reading {0} barcodes", symbology);
BarcodeData barcode = reader.ReadBarcode(image, LeadRect.Empty, symbology, options);
if (barcode != null)
{
Console.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value);
}
else
{
Console.WriteLine(" Not found");
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";
}
Help Collections
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