For a long time I have been looking for a really easy way to create a cryptographically random string in c#.  I knew it had to be simple but I just had not spend the time to dig one up.  Specifically I was looking for a quick and easy way to get a string that was acceptable for use as a Token for session use. 

using System;
using System.Security.Cryptography;

namespace ConsoleApplication1
{
   class Program
   {
   static void Main(string[] args)
   {
      byte[] random = new Byte[128]; //Tell it how long you want it to be
      RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
      rng.GetNonZeroBytes(random); 
      // The array is now filled with cryptographically strong random bytes.

      Console.WriteLine(System.Convert.ToBase64String(random));
         Console.ReadKey();
      }
   }
}