.NET のための Aspose.BarCode を使用して QR コード メタデータを抽出する方法

PM> Install-Package Aspose.BarCode

using Aspose.BarCode.BarCodeRecognition;

string imagePath = "wifi_qr_sample.png";

BarCodeReader reader = new BarCodeReader(imagePath, DecodeType.QR);

foreach (BarCodeResult result in reader.ReadBarCodes())
{
    Console.WriteLine($"Type: {result.CodeTypeName}");
    Console.WriteLine($"Text: {result.CodeText}");
}

// Example: "WIFI:S:MySSID;T:WPA;P:mypassword;;"
string qrText = result.CodeText;
if (qrText.StartsWith("WIFI:"))
{
    // Parse SSID, password, and type from the string
}

try
{
    using (BarCodeReader reader = new BarCodeReader(imagePath, DecodeType.QR))
    {
        foreach (BarCodeResult result in reader.ReadBarCodes())
        {
            string text = result.CodeText;
            // Add parsing/validation logic as needed
            Console.WriteLine(text);
        }
    }
}
catch (Exception ex)
{
    Console.WriteLine($"Error: {ex.Message}");
}

using Aspose.BarCode.BarCodeRecognition;
using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        string imagePath = "wifi_qr_sample.png";

        try
        {
            using (BarCodeReader reader = new BarCodeReader(imagePath, DecodeType.QR))
            {
                foreach (BarCodeResult result in reader.ReadBarCodes())
                {
                    string qrText = result.CodeText;
                    Console.WriteLine($"Decoded: {qrText}");

                    if (qrText.StartsWith("WIFI:"))
                    {
                        // Example format: WIFI:S:MySSID;T:WPA;P:mypassword;;
                        var match = Regex.Match(qrText, @"WIFI:S:(.*?);T:(.*?);P:(.*?);;");

                        if (match.Success)
                        {
                            Console.WriteLine($"SSID: {match.Groups[1].Value}");
                            Console.WriteLine($"Type: {match.Groups[2].Value}");
                            Console.WriteLine($"Password: {match.Groups[3].Value}");
                        }
                    }
                }
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error: {ex.Message}");
        }
    }
}

// Example QR: "BEGIN:VCARD\nFN:John Doe\nTEL:1234567890\nEND:VCARD"
if (qrText.StartsWith("BEGIN:VCARD"))
{
    // Parse and save contact info
}

// Example QR: "BEGIN:VEVENT\nSUMMARY:Meeting\nDTSTART:20250521T100000\nEND:VEVENT"
if (qrText.Contains("BEGIN:VEVENT"))
{
    // Parse and add to calendar
}