using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        // Test with de-DE locale

        TestParsingWithCulture("51.75", "de-DE");

        TestParsingWithCulture("51.75", "fr-FR");

    }

​

    private static void TestParsingWithCulture(string jsonString, string cultureName)

    {

        // Set the current culture to the specified culture

        CultureInfo culture = new CultureInfo(cultureName);

        CultureInfo.CurrentCulture = culture;

​

        Console.WriteLine($"Testing with culture: {cultureName}");

​

        // Parse the JSON value

        decimal? result = GetDecimalValue(jsonString);

​

        if (result.HasValue)

        {

            Console.WriteLine($"Parsed value: {result.Value}");

        }

        else

        {

            Console.WriteLine("Parsing failed.");

        }

    }

​

    private static decimal? GetDecimalValue(string jsonString)

    {

        return decimal.TryParse(jsonString, NumberStyles.Number, CultureInfo.CurrentCulture, out decimal d) ? d : (decimal?)null;

    }

}

​