A small something I threw together to get a feel for the C# class library, keywords, and of course, Visual Studio 2012.

It's a small snippet that converts a string object into 8-bit binary sequences, and 8-bit sequences back into characters. A tag "b" is indicated at the end of a string to denote that the string is in binary form. It's methods are static so they must be called using the class name.

"Binary.ToBinary("Hello"); => 01001000 01100101 01101100 01101100 01101111b"

"Binary.ToBinary("H"); => "H" = 01001000b"

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Binary
{
    class Program
    {
        static void Main(string[] args)
        {
        }

        //Converts the supplied string into separate 8-bit binary sequences.
        //"H" = 01001000b "Hello" = 01001000 01100101 01101100 01101100 01101111b
        //"b" is tagged at the end of each sequence to denote that the string is in binary.
        public static string ToBinary(string bin)
        {
            char[] c = bin.ToCharArray();
            string o = "", s = "";

            foreach (char ch in c)
            {
                int tmp = (int)ch;
                s = "";

                while (tmp > 1)
                {
                    s = Convert.ToString((tmp % 2)) + s;
                    tmp = (tmp / 2);
                }

                s = Pad(Convert.ToString(tmp) + s, 8);
                o += s + " ";
            }

            return o + "\bb";
        }//END Method ToBinary(string s);

        //Converts sequences back to strings
        //Sequences tagged with "b" will be treated as binary in 8 bit chunks.
        public static string ToString(string seq)
        {
            char[] c = seq.ToCharArray();
            string result = "";

            switch (c[c.Length - 1]) {
                case 'b':
                    string[] par = seq.Replace("b","").Split(' ');

                    foreach (string str in par) {
                        char[] tmp = str.ToCharArray();
                        int dec = 0;

                        for (int a = 0; a < tmp.Length; a++)
                        {
                            if (tmp[a].Equals('1')) {
                                dec += (int)Math.Pow( 2 , ( (tmp.Length - 1) - a ) );
                            }
                        }
                        result += Convert.ToString((char)dec);
                    }

                    break;
                default: break;
            }
            return result;
        }//END Method ToString(string seq);

        //Pads pure binary sequences to the specified length using 0's
        //"110" padded to a width of 4 would be "0110"
        private static string Pad(string bin, int width)
        {
            char[] c = bin.ToCharArray();
            if ( c.Length < width )
            {
                for (int a = 0; a < (width - c.Length); a++)
                {
                    bin = "0" + bin;
                }
            }
            return bin;
        }//END Method Pad(string s, int width);
    }
}