HOW TO: Use LEADTOOLS to Open a URI from a QR Code

#1 Posted : Monday, November 22, 2021 12:15:16 PM(UTC)

Amin

Groups: Manager, Tech Support
Posts: 367

Was thanked: 1 time(s) in 1 post(s)

The attached C# project shows how to check a URI link embedded in a QR barcode and open it in the default browser.

The project is based on the Detect and Extract Barcodes tutorial, with the following main modifications:

1. Instead of the following line:

Code:

MessageBox.Show($"Symbology: {data.Symbology.ToString()}, Location: {data.Bounds.ToString()}, Data: {data.Value}");

The following code was added:

Code:


if (data.Symbology == BarcodeSymbology.QR)
   ParseQR(data);
else
   MessageBox.Show($"Symbology: {data.Symbology.ToString()}, Location: {data.Bounds.ToString()}, Data: {data.Value}");

2. The following function was added:

Code:


private void ParseQR(BarcodeData QRdata)
{
   string QRString = QRdata.Value;
   if (Uri.IsWellFormedUriString(QRString, UriKind.Absolute))
   {
      if (MessageBox.Show(QRString + "\nAppears to be a valid URI string. Would you like to try to open it in the default browser?", "LEADTOOLS demo", MessageBoxButtons.YesNo) == DialogResult.Yes)
         System.Diagnostics.Process.Start(QRString);
   }
   else
      MessageBox.Show(QRString + "\nDoes not appear to be a valid URI string.", "LEADTOOLS demo");
}

This is a screenshot of the program in action:

This is the project ZIP file:

File Attachment(s):

OpenQrUri.zip (12kb) downloaded 7 time(s).

Amin Dodin

Senior Support Engineer
LEAD Technologies, Inc.

Notification

[] HOW TO: Use LEADTOOLS to Open a URI from a QR Code - .NET C#


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