using System; using System.Web; using System.IO; class MyNewClass { public static void Main() { String myString; Console.WriteLine("Enter a string having '&' or '"' in it: "); myString=Console.ReadLine(); String myEncodedString; // Encode the string. myEncodedString = HttpUtility.HtmlEncode(myString); Console.WriteLine("HTML Encoded string is "+myEncodedString); StringWriter myWriter = new StringWriter(); // Decode the encoded string. HttpUtility.HtmlDecode(myEncodedString, myWriter); Console.Write("Decoded string of the above encoded string is "+myWriter.ToString()); } }