using System;
using System.Net;
public class Program
{
public static void Main()
// Part A: encode this string.
string encoded = WebUtility.HtmlEncode("<b>Hello 'friend'</b>");
// Part B: reverse the change.
string decoded = WebUtility.HtmlDecode(encoded);
// Print results.
Console.WriteLine("ENCODED: {0}", encoded);
Console.WriteLine("DECODED: {0}", decoded);
}