GdPicture.NET Reference Guide
BarcodePDF417ReaderGetBarcodeCount Method (GdPictureImaging)
Example 





GdPicture14 Namespace > GdPictureImaging Class : BarcodePDF417ReaderGetBarcodeCount Method
Returns the number of barcode detected by the BarcodePDF417ReaderDoScan method.
Syntax
'Declaration
 
Public Function BarcodePDF417ReaderGetBarcodeCount() As Integer
public int BarcodePDF417ReaderGetBarcodeCount()
public function BarcodePDF417ReaderGetBarcodeCount(): Integer; 
public function BarcodePDF417ReaderGetBarcodeCount() : int;
public: int BarcodePDF417ReaderGetBarcodeCount(); 
public:
int BarcodePDF417ReaderGetBarcodeCount(); 

Return Value

The number of barcode detected.
Remarks

This method is used in the "Barcode Recognition" Demo.

Example
Finding PDF417 barcodes in an image and writing complete barcodes info into a file.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
 
    // Set to 0, so all the PDF417 barcodes in the image should be found.
    int expectedBarcodes = 0;
 
    // Perform scanning at best speed, ignoring very damaged barcodes.
    BarcodePDF417ReaderScanMode mode = BarcodePDF417ReaderScanMode.BestSpeed;
 
    // Start the PDF417 barcode scanning process and write info into a text file.
    gdpictureImaging.BarcodePDF417ReaderDoScan(imageID, mode, expectedBarcodes);
 
    using (System.IO.StreamWriter file = new System.IO.StreamWriter("PDF417.txt"))
    {
        int barcodesFound = gdpictureImaging.BarcodePDF417ReaderGetBarcodeCount();
 
        for (int i = 1; i <= barcodesFound; i++)
        {
            // Decoded information.
            file.WriteLine("Decoded info = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeValue(i));
 
            // The raw bytes decoded. It was post-processed to find the correct decoded info based on detected Encoding.
            file.WriteLine("Raw bytes = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeValueRAW(i));
 
            // The number of rows of the barcode.
            file.WriteLine("Rows = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeRows(i));
 
            // The number of columns of the barcode.
            file.WriteLine("Columns = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeColumns(i));
 
            // The skew angle of the barcode, in degrees.
            file.WriteLine("Skew angle = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeSkewAngle(i));
 
            // Confidence in result, in percentage (values from 0 to 100).
            file.WriteLine("Confidence = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeConfidence(i));
 
            // The barcode position, given by the coordinates of the corners.
            file.WriteLine("Position =  Top-Left=["
                + gdpictureImaging.BarcodePDF417ReaderGetBarcodeX1(i) + ", " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeY1(i)
                + "] Top-Right=[" + gdpictureImaging.BarcodePDF417ReaderGetBarcodeX2(i) + ", " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeY2(i)
                + "] Bottom-Right=[" + gdpictureImaging.BarcodePDF417ReaderGetBarcodeX3(i) + ", " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeY3(i)
                + "] Bottom-Left=[" + gdpictureImaging.BarcodePDF417ReaderGetBarcodeX4(i) + ", " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeY4(i) + "]");
        }
    }
 
    // Release used resources.
    gdpictureImaging.BarcodePDF417ReaderClear();
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}
See Also

Reference

GdPictureImaging Class
GdPictureImaging Members