RadBarcodeReader
RadBarcodeReader is the newest addition to the Barcode suite. The aim of the control is to decode image representations of one of the supported barcode symbologies.
Currently, all of the 1D barcodes, offered by Telerik, are supported. The list is available here.
When decoding a barcode image, the control will either display the type and text encoded in the image, or a warning specifying that no known symbology has been detected. A typical layout for the barcode reader is shown below:
Demo application >> BarcodeReader example
The Open Barcode button lets the user choose an image path, to the image which will be decoded. The Decode Barcode triggers the decoding algorithm. The underlying text area is updated with the result of the decoding process.
The complete example is available in the Demo application >> BarcodeReader example.
Decoding a barcode image
BarcodeType barcodeType = Telerik.WinControls.UI.Barcode.Reader.BarcodeType.Code93Extended;
Bitmap bitmap = new Bitmap(Properties.Resources.barcode_reader);
RadBarcodeReader reader = new Telerik.WinControls.UI.Barcode.RadBarcodeReader();
var decodeResult = reader.Decode(bitmap, barcodeType);
if (decodeResult != null && decodeResult != DecodeResult.Empty)
{
RadMessageBox.Show(decodeResult.Value);
}
Dim barcodeType As BarcodeType = Telerik.WinControls.UI.Barcode.Reader.BarcodeType.Code93Extended
Dim bitmap As Bitmap = New Bitmap(My.Resources.barcode_reader)
Dim reader As RadBarcodeReader = New Telerik.WinControls.UI.Barcode.RadBarcodeReader()
Dim decodeResult = reader.Decode(bitmap, barcodeType)
If decodeResult IsNot Nothing AndAlso Not decodeResult.Equals(DecodeResult.Empty) Then
RadMessageBox.Show(decodeResult.Value)
End If
When decoding a barcode image, the image should contain only the barcode itself, no additional text to be present in that image.
Decoded Types
In some scenarios, to improve performance, you may want to specify the types of barcodes the reader will try to decode rather than have it iterate over all the available types.
This can also be useful to avoid conflicts between symbologies whose symbols may overlap, for example, Code93 and Code93Extended.
For the purpose, you can use the BarcodeType argument of the RadBarcodeReader's Decode and DecodeAll methods. It is a flags enumeration which holds the following types:
- None
- Code128
- Code93
- Code93Extended
- CodeMSI
- EAN13
- EAN128
- EAN8
- Postnet
- Planet
- IntelligentMail
- UPCA
- UPCE
- UPCSupplement2
- UPCSupplement5
In addition, the following values can also be set:
- OneDimensional: All 1D barcodes.
- WidthModulated1D: All width-modulated 1D barcodes (93 Extended included).
- HeightModulated1D: All height-modulated 1D barcodes.