Reference Guide
GdPicture14 Namespace / GdPictureImaging Class / BarcodeDataMatrixReaderClear Method
Example





In This Topic
    BarcodeDataMatrixReaderClear Method (GdPictureImaging)
    In This Topic
    Releases from memory all information about latest DataMatrix barcode detection.
    Syntax
    'Declaration
     
    
    Public Sub BarcodeDataMatrixReaderClear() 
    public void BarcodeDataMatrixReaderClear()
    public procedure BarcodeDataMatrixReaderClear(); 
    public function BarcodeDataMatrixReaderClear();
    public: void BarcodeDataMatrixReaderClear(); 
    public:
    void BarcodeDataMatrixReaderClear(); 
    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