using System;

using System.Globalization;

​

​

NumberFormatInfo nfi = new CultureInfo( "es-ES", false ).NumberFormat;

Console.WriteLine(nfi.NumberDecimalSeparator);

Console.WriteLine(nfi.NumberGroupSeparator);

​

​

var d = Convert.ToDecimal("1.2345", new CultureInfo("en-US"));

CultureInfo.CurrentCulture =  new CultureInfo( "es-ES", false);

​

Console.WriteLine(d);