Reference Guide
GdPicture14 Namespace / GdPictureImaging Class / Barcode1DReaderDoScan Method / Barcode1DReaderDoScan(Int32,Barcode1DReaderScanMode) Method
A unique image identifier of the GdPicture image representing the image in use.
A member of the Barcode1DReaderScanMode enumeration. The scan mode (speed or quality) used for scanning process.
Example





In This Topic
    Barcode1DReaderDoScan(Int32,Barcode1DReaderScanMode) Method
    In This Topic
    Starts a barcode recognition process on a specified GdPicture image or on an area of a specified GdPicture image defined by the SetROI method. This method allows you to set the scanning mode parameter according to your preference.
    Syntax
    'Declaration
     
    
    Public Overloads Function Barcode1DReaderDoScan( _
       ByVal ImageID As Integer, _
       ByVal ScanMode As Barcode1DReaderScanMode _
    ) As GdPictureStatus
    public GdPictureStatus Barcode1DReaderDoScan( 
       int ImageID,
       Barcode1DReaderScanMode ScanMode
    )
    public function Barcode1DReaderDoScan( 
        ImageID: Integer;
        ScanMode: Barcode1DReaderScanMode
    ): GdPictureStatus; 
    public function Barcode1DReaderDoScan( 
       ImageID : int,
       ScanMode : Barcode1DReaderScanMode
    ) : GdPictureStatus;
    public: GdPictureStatus Barcode1DReaderDoScan( 
       int ImageID,
       Barcode1DReaderScanMode ScanMode
    ) 
    public:
    GdPictureStatus Barcode1DReaderDoScan( 
       int ImageID,
       Barcode1DReaderScanMode ScanMode
    ) 

    Parameters

    ImageID
    A unique image identifier of the GdPicture image representing the image in use.
    ScanMode
    A member of the Barcode1DReaderScanMode enumeration. The scan mode (speed or quality) used for scanning process.

    Return Value

    A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK. We strongly recommend always checking this status first.
    Remarks
    Please note that this method finishes after the first barcode has been found. You can use the Barcode1DReaderDoScan(Int32,Barcode1DReaderScanMode,Barcode1DReaderType,Boolean,Int32) method and set the ExpectedCount parameter to 0 to find all available barcodes at once.

    For more details, please refer to our Barcode Recognition Sample included in the installation folder that demonstrates the usage of this method.

    Example
    Finding all 1D barcodes in a given image and saving their information to a file.
    using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
    {
        int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
     
        // Start the barcode scanning process to find all available 1D barcode symbols using the best speed.
        gdpictureImaging.Barcode1DReaderDoScan(imageID, Barcode1DReaderScanMode.BestSpeed);
     
        using (System.IO.StreamWriter file = new System.IO.StreamWriter("barcodes.txt"))
        {
            int barcodesFound = gdpictureImaging.Barcode1DReaderGetBarcodeCount();
            for (int i = 1; i <= barcodesFound; i++)
            {
                file.WriteLine(gdpictureImaging.Barcode1DReaderGetBarcodeValue(i));
            }
        }
     
        // Release used resources.
        gdpictureImaging.Barcode1DReaderClear();
        gdpictureImaging.ReleaseGdPictureImage(imageID);
    }
    See Also