using System;

using System.Globalization;

​

public class Test

{

    static void cout(string str) => Console.WriteLine(str);

    static void cout(IFormattable o, CultureInfo ci) => cout(o.ToString(null, ci));

    static int tparse(string s, CultureInfo ci) 

    {

        int x;

        if (int.TryParse(s, NumberStyles.Any, ci, out x)) return x;

        cout(s + " don't parsed");

        return -1;

    }

    static void info(CultureInfo ci)

    {

        cout("NN:" + ci.NativeName);

        cout("EN:" + ci.EnglishName);

        cout("ND:" + string.Join("", ci.NumberFormat.NativeDigits));

    }

    public static void Main()

    {

        CultureInfo

        ru = new CultureInfo("ru"),

        bn = new CultureInfo("bn");

        info(ru); // ND: 0123456789

        info(bn); // ND: ০১২৩৪৫৬৭৮৯

        cout(123, ru); // 123

        cout(1.3, ru); // 1,3

        cout(123, bn); // ১২৩

        cout(1.3, bn); // ১.৩

        cout("---");

        string[] str = { "123", "0", "১২৩", "০" };

        foreach(var s in str)

        {

            cout(tparse(s, ru), ru);

            cout(tparse(s, bn), ru);

        }

    }

}