using System;

public class Program

{

    public static void Main()

    {

        var teste = "!#%&:()*,-./;?@[]_{}¡«·»¿";

        foreach(var item in teste)

        {

            var isPunctuation = char.IsPunctuation(item);

            string msg = "\nIsPunctuation: {0} Char: {1}";

            Console.WriteLine(string.Format(msg, isPunctuation, item) );

        }

    }

}