using System;

using System.Text;

using System.Security.Cryptography;

​

    public static class StringExtensions

    {

        public static string ToMd5(this string text)

        {

            var bytes = MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(text));

            var stringBuilder = new StringBuilder();

​

            foreach (var item in bytes)

            {

                stringBuilder.Append(item.ToString("x2"));

            }

            return stringBuilder.ToString();

        }

        public static string ToMd5Easy(this string text)

        {

            var bytes = MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(text));

            return Encoding.UTF8.GetString(bytes);

        }

    }

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Test".ToMd5());

        Console.WriteLine("Test".ToMd5Easy());

    }

}