Scan Barcode Using XAMARIN

For your use-case, to live capture barcodes from a mobile device using Xamarin, you can look into using the LEADTOOLS Barcode SDK and Xamarin Camera Control.

https://www.leadtools.com/sdk/products/barcode-pro

https://www.leadtools.com/sdk/xamarin/camera

You can leverage the CameraView class which will allow you to access a mobile device's camera. You can access the frames received from the camera using the FrameReceived event, then take that frame and detect/extract barcodes codes using the BarcodeReader class.

For an example see the code below:

private void liveCapture_Clicked(object sender, EventArgs e)
{
    leadCamera.CameraOptions.AutoRotateImage = true;
    barcodeEngineInstance = new BarcodeEngine();

    leadCamera.FrameReceived += LeadCamera_FrameReceived;
}
private void LeadCamera_FrameReceived(Leadtools.Camera.Xamarin.FrameHandlerEventArgs e)
{
    // Frame Received Handler Code 
    using (RasterImage image = e.Image)
    {
        BarcodeData[] dataArray = barcodeEngineInstance.Reader.ReadBarcodes(image, LeadRect.Empty, 0, null);

        if (dataArray != null)
        {
            leadCamera.FrameReceived -= LeadCamera_FrameReceived;
            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();
            }
            Device.BeginInvokeOnMainThread(() =>
            {
                DisplayAlert("Barcode(s) Found!", sb.ToString(), "OK");
            });
        }
    }
}

Thanks, but this code is underlined:

MobileBarcodeScanner

We need something else, RIGHT?

1. Add ZXing.Net.Mobile NuGet package to your Xamarin.Forms project. Right-click on your solution, select "Manage NuGet Packages," search for "ZXing.Net.Mobile," and install it.

2. In your Xamarin.Forms project, create a new Content Page or use an existing one where you want to include the barcode scanner.

3. Add the necessary namespaces at the top of your code-behind file:

   using ZXing;
   using ZXing.Mobile;
   

4. In your XAML file, add a button and assign a click event handler to it:

5. implement the click event handler for the button:

   private async void OnScanButtonClicked(object sender, EventArgs e)
   {
       // Create a new instance of the MobileBarcodeScanner
       var scanner = new MobileBarcodeScanner();
   
       // Set the desired barcode formats to scan
       scanner.TopText = "Hold camera up to barcode";
       scanner.BottomText = "Barcode will be automatically scanned";
   
       // Start scanning
       var result = await scanner.Scan();
   
       // Handle the scan result
       if (result != null && !string.IsNullOrWhiteSpace(result.Text))
       {
           // Barcode successfully scanned
           string barcodeValue = result.Text;
           // Do something with the barcode value
           // For example, display it in a label
           barcodeLabel.Text = barcodeValue;
       }
   }