Barcode index. Must be between 1 and BarcodeDataMatrixReaderGetBarcodeCount returned value.
Example





In This Topic
GdPicture14 Namespace / GdPictureImaging Class / BarcodeDataMatrixReaderGetBarcodeColumns Method

BarcodeDataMatrixReaderGetBarcodeColumns Method (GdPictureImaging)

In This Topic
Returns the number of columns of a barcode detected by the BarcodeDataMatrixReaderDoScan method.
Syntax
'Declaration
 

Public Function BarcodeDataMatrixReaderGetBarcodeColumns( _
   ByVal BarcodeNo As Integer _
) As Integer
public int BarcodeDataMatrixReaderGetBarcodeColumns( 
   int BarcodeNo
)
public function BarcodeDataMatrixReaderGetBarcodeColumns( 
    BarcodeNo: Integer
): Integer; 
public function BarcodeDataMatrixReaderGetBarcodeColumns( 
   BarcodeNo : int
) : int;
public: int BarcodeDataMatrixReaderGetBarcodeColumns( 
   int BarcodeNo
) 
public:
int BarcodeDataMatrixReaderGetBarcodeColumns( 
   int BarcodeNo
)

Parameters

BarcodeNo
Barcode index. Must be between 1 and BarcodeDataMatrixReaderGetBarcodeCount returned value.

Return Value

The number of columns of the barcode.
Remarks

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

Example
Finding DataMatrix barcodes in an image and writes complete barcodes info into a file. 
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
 
    // Set to 0, so all the DataMatrix barcodes in the image should be found.
    int expectedBarcodes = 0;
 
    // Perform scanning at best speed, ignoring very damaged barcodes.
    BarcodeDataMatrixReaderScanMode mode = BarcodeDataMatrixReaderScanMode.BestSpeed;
 
    // Start the DataMatrix scanning process and write info into a text file.
    gdpictureImaging.BarcodeDataMatrixReaderDoScan(imageID, mode, expectedBarcodes);
 
    using (System.IO.StreamWriter file = new System.IO.StreamWriter("DataMatrix.txt"))
    {
        int barcodesFound = gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeCount();
 
        for (int i = 1; i <= barcodesFound; i++)
        {
            // Decoded information.
            file.WriteLine("Decoded info = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeValue(i));
 
            // The skew angle of the barcode, in degrees.
            file.WriteLine("Skew angle = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeSkewAngle(i));
 
            // The number of rows of the barcode.
            file.WriteLine("Rows = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeRows(i));
 
            // The number of columns of the barcode.
            file.WriteLine("Columns = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeColumns(i));
 
            // The raw bytes decoded. It was post-processed to find the correct decoded info based on detected Encoding.
            file.WriteLine("Raw bytes = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeValueRAW(i));
 
            // The barcode position, given by the coordinates of the corners.
            file.WriteLine("Position =  Top-Left=["
                + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX1(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY1(i)
                + "] Top-Right=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX2(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY2(i)
                + "] Bottom-Right=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX3(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY3(i)
                + "] Bottom-Left=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX4(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY4(i) + "]");
        }
    }
 
    // Release used resources.
    gdpictureImaging.BarcodeDataMatrixReaderClear();
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}
See Also

Reference

GdPictureImaging Class
GdPictureImaging Members