public static string StringToBinary(string data)

 {

     StringBuilder sb = new StringBuilder();

     foreach (char c in data.ToCharArray())

     {

         sb.Append(Convert.ToString(c, ).PadLeft(, ''));

     }

     return sb.ToString();

 }

 public static string BinaryToString(string data)

 {

     List<Byte> byteList = new List<Byte>();

     for (int i = ; i < data.Length; i += )

     {

         byteList.Add(Convert.ToByte(data.Substring(i, ), ));

     }

     return Encoding.ASCII.GetString(byteList.ToArray());

 }