how to scan a QR code using windows CE in C#

blue cai

13y6.4kC#

im new in window CE application development. i need to develop a windowCE application using visual studio 2008 professional edition. i have installed windows mobile device center, windowsCE emulator 3.0.the program should allow user to scan a QRcode using MC70(windows mobile 5.0 device). the QR code information will be display and store in to database.

through my research, i downloaded and installed the software needed to develop a window CE program. the next stage now is to program it out. i could not find a complete sample code or complete QR code related library.

any one can help me with this issue? really need help to develop a QR code scanning program in C# to run on Window CE platform.

Thank you in advance.

5 Replies

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Leon D4y ago
Hi,

Free Spire.Barcode library is capable of scanning QR code in C#. You just need to write 1 line of code.
https://www.e-iceblue.com/Introduce/barcode-for-net-introduce.html

Code example:
string[] data = Spire.Barcode.BarcodeScanner.Scan("QR.png",
Spire.Barcode.BarCodeType.QRCode);
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Kip Hackman4y ago
You can use LEADTOOLS Barcode Pro SDK technology in your application.
https://www.leadtools.com/sdk/products/imaging-pro
You can leverage the BarcodeReader class, which allows you to detect any LEADTOOLS supported barcode type(QR in your case) from an image and extract the encoded information.
Here is some sample code:
// Load image with barcode
using (RasterCodecs codecs = new RasterCodecs)
using (RasterImage image = codecs.Load(@"IMAGE FILE PATH"))
{
    // initialize BarcodeEngine and Reader
    BarcodeEngine barcodeEngine = new BarcodeEngine();
    BarcodeReader barcodeReader = barcodeEngine.Reader;

    // Passing LeadRect as empty searches the entire image for the barcodes
    BarcodeData[] dataArray = barcodeEngineInstance.Reader.ReadBarcodes(image, LeadRect.Empty, 0, null);

    if (dataArray == null)
        return;

    StringBuilder sb = new StringBuilder();
    sb.AppendFormat("{0} barcode(s) found", dataArray.Length);
    sb.AppendLine();

    for (int i = 0; i < dataArray.Length; i++)
    {
        BarcodeData data = dataArray[i];

        sb.AppendFormat("Symbology: {0}, Location: {1}, Data: {2}", data.Symbology.ToString(), data.Bounds.ToString(), data.Value);
        sb.AppendLine();
    }
    Console.WriteLine(sb.ToString());
}
Also to address Ashish's comment, LEADTOOLS does offer the ability to run barcode recognition during live capture. See the tutorial links below:
https://www.leadtools.com/help/sdk/v22/tutorials/dotnet-winforms-detect-and-extract-barcodes-using-live-capture.html
https://www.leadtools.com/help/sdk/v22/tutorials/xamarin-integrate-live-capture-with-xamarin-camera-control.html
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Ashish Mahendra11y ago
Hi is there any option to read QR code by using a Live camera.
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cin pell12y ago
Here is a sample:

string[] results = BarcodeReader.read("c:/qrcode-csharp.gif", BarcodeReader.QRCODE)

I use the c# .net reader for qr-code and .net barcode reader for c#, asp.net, vb.net.
You should add their .dll files to your project firstly.
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JAY KARL13y ago
BizCode Barcode Reader for .NET can easily read, scan QR Code two-dimensional barcode images in various image formats including Png, Gif, Jpeg, Bmp and Tiff.

It easy and fast to read qr code in .net using C#.

1,Download and unzip BizCode Reader for .NETpackage;
2,Copy BusinessRefinery.Barcodes.Reader.dll to your project folder. (please do not copy to your .NET project bin folder, during building, Visual Studio will do it for you.)
3,Add BusinessRefinery.Barcodes.Reader.dll to your .NET barcode reading project reference.
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