gistfile1.txt

using System;
using System.Text;

public class Program
{
    static void Main()
    {
        var builder = new StringBuilder();
        for (int i = 0; i < 256; i++)
        {
            byte b = (byte) i;
            char c = (char) b;
            builder.Append(c);
        }
        Console.WriteLine(builder.ToString());
    }
}