DecodeFileRect Method

Description

Reads barcode from the specified area on a local image.

Syntax

public BarcodeResult[] DecodeFileRect(string strFileName, Rectangle rect);

Parameters

strFileName: The path of the file.
rect: The specified area on the file which is a rectangle.

Return Value

All barcodes have been read. If no barcodes are read, null is returned.

Remarks

The file to decode needs to be an image in the formats BMP, JPG, PNG, TIFF or PDF.

Example

ReaderOptions option = new ReaderOptions();
option.BarcodeFormats = (
    BarcodeFormat.OneD | 
    BarcodeFormat.QR_CODE | 
    BarcodeFormat.PDF417 | 
    BarcodeFormat.DATAMATRIX
);
option.MaxBarcodesToReadPerPage = 1;
BarcodeReader reader = new BarcodeReader();
reader.ReaderOptions = option;
try
{
    BarcodeResult[] results = reader.DecodeFileRect("C:\\test.bmp", rect);
    for(int i = 0; i < results.Length; ++i)
    {
        BarcodeResult barcode = results[i];
        Console.WriteLine("{0}: {1}", i, barcode.BarcodeText);
    }
}
catch(BarcodeReaderException exp)
{
    Console.WriteLine("Error: {0}, {1}", exp.Code.ToString(), exp.Message);
}