using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        CultureInfo.CurrentCulture = CultureInfo.CurrentUICulture = new CultureInfo("tr-TR");

        var str = @"VIENNA IS A VERY BEAUTIFUL CAPITAL CITY.";

        str.ToLower().Dump();

        var title = new CultureInfo("en-US", false).TextInfo.ToTitleCase(str.ToLower());

        title.Dump();

    }

}