How to scan QR code image and get result in C# web input?

Sushant Shinde

8y1.1k.NET

I generate QR code using keepAutomation.dll. Then I take printout that geneated QR code iamge, now I want scan that printed QR using device and result shown in C# web page input field to further procedure. So, how to scan image and display result in web input?

Any one know answer then please reply me.

Thank you ,

4 Replies

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Sapna Girish5y ago
You could also try Spire.Barcode. It's eay to use.
string[] data = Spire.Barcode.BarcodeScanner.Scan("QRCode.png", Spire.Barcode.BarCodeType.QRCode);
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Sachin Singh5y ago
just one line of code with .net QR code reader
Add BarcodeLib.BarcodeReader.dll to your .NET project reference.
string[] results = BarcodeReader.read("c:/qrcode-barcode.gif", BarcodeReader.QRCODE);
download dll from:-http://www.barcodelib.com/net_barcode_reader/barcodes/qrcode.html
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Kip Hackman5y ago
You can use LEADTOOLS Barcode SDK technology in your application.
https://www.leadtools.com/sdk/barcode
You can leverage the BarcodeEngine class, to write, detect, and extract barcode information from any of the LEADTOOLS supported barcode types, including QR.
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 PDF for the barcode
    BarcodeData data = barcodeReader.ReadBarcode(image, LeadRect.Empty, BarcodeSymbology.QR);
    // Output barcode data
    Console.WriteLine($"Barcode Symbology: {data.Symbology}\nBarcode Value: {data.Value}\nBarcode Bounds: {data.Bounds}");
}
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Laxmidhar Sahoo8y ago
use dll QRCoder that search from google
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