using System;

using System.Globalization;

using System.Reflection;

using System.Collections.Generic;

using System.Linq;

using ConsoleTables;

public class Program

{

    static DateTime value = new DateTime(2012, 5, 28, 22, 35, 0);

    public static void Main()

    {

        var cultures = (new List<string> { "en", "en-US", "en-GB", "de", "fr", "zh"});

        var cultureResults = cultures

            .Select(c => ShowCulture(c)).Prepend(Patterns())

            .SelectMany(inner => inner.Select((item, index) => new { item, index }))

            .GroupBy(i => i.index, i => i.item)

            .Select(g => g.ToList())

            .ToList();

        var table = new ConsoleTable(cultures.Prepend(" ").ToArray());

        foreach(var c in cultureResults) table.AddRow(c.ToArray());

        table.Write(Format.MarkDown);

    }

    private static List<string> ShowCulture(string cultureName) {

      var culture = CultureInfo.GetCultureInfo(cultureName);

      DateTimeFormatInfo dtfi = culture.DateTimeFormat;

      Type typ = dtfi.GetType();

      PropertyInfo[] props = typ.GetProperties();

      return (new List<PropertyInfo>(props))

        .Where(p => p.Name.Contains("Pattern"))

        .Select(prop => value.ToString(prop.GetValue(dtfi, null).ToString()))

          .Prepend(culture.DisplayName)

          .ToList();

​

    }

    private static List<string> Patterns() {

      DateTimeFormatInfo dtfi = CultureInfo.GetCultureInfo("en").DateTimeFormat;

      Type typ = dtfi.GetType();

      PropertyInfo[] props = typ.GetProperties();

      return (new List<PropertyInfo>(props))

        .Where(p => p.Name.Contains("Pattern")).Select(p => p.Name).Prepend("").ToList();

    }

}