ASCIIEncoding Class represents an ASCII character encoding of Unicode characters.
using System; using System.Text; class MainClass{ public static void Main() { ASCIIEncoding ascii = new ASCIIEncoding(); String unicodeString ="Pi (\u03a0) and Sigma (\u03a3)."; int indexOfPi = unicodeString.IndexOf('\u03a0'); int indexOfSigma = unicodeString.IndexOf('\u03a3'); Byte[] encodedBytes = ascii.GetBytes(unicodeString); foreach (Byte b in encodedBytes) { Console.Write("[{0}]", b); } String decodedString = ascii.GetString(encodedBytes); Console.WriteLine(decodedString); } }