using System; using System.Text; using System.Linq; using System.Diagnostics; 

public static class Program

{

    // Based on http://www.codeproject.com/Articles/13503/Stripping-Accents-from-Latin-Characters-A-Foray-in

    // Proper Normalization

    public static string UnicodeToANSI(this string s)

    {

        var sb = new StringBuilder();

        sb.Append(s.Normalize(NormalizationForm.FormKD)

        .Where(x => (x > 30 && x <= 255))

        .ToArray());

        return sb.ToString();

    }

    //ANSI characters 32 to 127 correspond to those in the 7-bit ASCII character set,

    public static string ReducetoASCII(this string s)

    {

        StringBuilder sb = new StringBuilder(s.Length);

        foreach (char c in s)

        {

            if ((int)c > 255) // remove chars > 127

                continue;

            if ((int)c < 32)  // remove  control characters 

                continue;

            sb.Append(c);

        }

        return sb.ToString();

    }

    public static void Main()

    {

        Stopwatch sw = new Stopwatch(); 

        string french = "A Paris, le cortège parisien s’était élancé à 14 heures.\r\n\tFace à l’affluence, un «itinéraire bis» a été mis en place. D’importants rassemblements ont lieu à Bordeaux, Marseille, Rennes ou Lyon. Suivez la journée avec nos journalistes dans toute la France.";

        string ftemp = string.Empty; 

        string german = "ޘ Trump\t\r\nverwechselt Klägerin Carroll auf Foto mit Ex-Frau – das könnte Folgen haben"; 

        string gtemp = string.Empty; 

        Console.WriteLine(french); 

        sw.Start();

        ftemp = french.ReducetoASCII(); 

        sw.Stop(); 

        Console.WriteLine("Ansi reduced\r\n" + ftemp + " in " + sw.ElapsedTicks); 

        sw.Reset(); 

        sw.Start();

        ftemp = french.UnicodeToANSI(); 

        sw.Stop(); 

        Console.WriteLine("Proper Normalization\r\n" + ftemp + " in " + sw.ElapsedTicks); 

        Console.WriteLine();

        Console.WriteLine();

        Console.WriteLine(german); 

        sw.Reset();

        sw.Start();

        gtemp = german.ReducetoASCII(); 

        sw.Stop(); 

        Console.WriteLine("Ansi reduced\r\n" + gtemp + " in " + sw.ElapsedTicks); 

        sw.Reset(); 

        sw.Start();

        gtemp = german.UnicodeToANSI(); 

        sw.Stop(); 

        Console.WriteLine("Proper Normalization\r\n" + gtemp + " in " + sw.ElapsedTicks); 

    }

}