using System;

using System.Globalization;

public class Program

{

    public static double ToDecimal(string str, CultureInfo culture)

    {

        return double.Parse(str, NumberStyles.Currency, culture);

    }

    public static void Main()

    {   

        double val = 1.123;

        CultureInfo cultureinfo = new CultureInfo("es");

        string valstr = val.ToString("C", cultureinfo); 

        Console.WriteLine(valstr);  

        // parse

        double d = (double)ToDecimal(valstr, cultureinfo);      

        Console.WriteLine(d.ToString());

    }

}