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Barcode Scanner in C#

Posted by Krishna Garad Articles | .NET 4.5 August 27, 2011
In this article we will discuss about barcode scanner in C#.
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Introduction:

In last article we discuss about generating barcode images. In this article we will discuss about to reading those barcode images from C#. For generating barcode Images we used this SDK provided by OnBarcode.com. For reading those barcodei mages or scannig those barcode images OnBarcode.com provide the BarCodeReader SDK which is available here. You can download it and use it as usual.

BackGround:

In some cases developer need to generate the barcode images and scan those barcode images. You can check how to generating barcode images and scannig those barcode images from our C# application. We will see how to perform the scannig task in this article step-by-step.

Step 1:

Download barcode reader dll from here and add the reference to Onbarcode.Barcode.BarcodeScanner to your application.

Step 2:

This BarcodeScanner dll contain so many methods to scan the barcode image and retrive the data present in those images. Write this two methods to scan the barcode images.

1)  ReadBarcodeFromFile:

This method is very simple method to scan the barcode image which will take the filenpath as argument where barcode image is present and retrive String[] as data.

private String[] ReadBarcodeFromFile(string _Filepath)
        {
           String[] barcodes = BarcodeScanner.Scan(_Filepath, BarcodeType.Code39);
           return barcodes;
        }

2)  Read BarcodeFromBitmap:

This one other method is provided by BarcodeScanner dll which will take Bitmap image as input and returns same String[] as output.

private String[] ReadBarcodeFromBitmap(Bitmap _bimapimage)
        {
            System.Drawing.Bitmap objImage = _bimapimage;
            String[] barcodes = BarcodeScanner.Scan(objImage, BarcodeType.Code39);
            return barcodes;
        }

You can call this method by passing barcode image as bitmap.

Conclusion:

In this way we can scan the barcode images using C#.

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