using System;

using System.Collections.Generic;

//using System.Text;

// Need to add a Reference to the System.Web assembly.

using System.Web;

​

namespace UriEncodingDEMO2

{

    public class Program

    {

        public static void Main(string[] args)

        {

            EncodeStrings();

​

            //Console.WriteLine();

            //Console.WriteLine("Press any key to continue...");

            //Console.Read();

        }

​

        public static void EncodeStrings()

        {

            string stringToEncode = "ABCD" + "abcd"

            + "0123" + " !\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~" + "ĀāĒēĪīŌōŪū";

​

            // Need to set the console encoding to display non-ASCII characters correctly (eg the 

            //  Latin A-Extended characters such as ĀāĒē...).

            //  Console.OutputEncoding = Encoding.UTF8;

​

            // Will also need to set the console font (in the console Properties dialog) to a font 

            //  that displays the extended character set correctly.

            // The following fonts all display the extended characters correctly:

            //  Consolas

            //  DejaVu Sana Mono

            //  Lucida Console

​

            // Also, in the console Properties, set the Screen Buffer Size and the Window Size 

            //  Width properties to at least 140 characters, to display the full width of the 

            //  table that is generated.

​

            Dictionary<string, Func<string, string>> columnDetails =

                new Dictionary<string, Func<string, string>>();

            columnDetails.Add("Unencoded", (unencodedString => unencodedString));

            columnDetails.Add("UrlEncoded",

                (unencodedString => HttpUtility.UrlEncode(unencodedString)));

            columnDetails.Add("UrlEncodedUnicode",

                (unencodedString => HttpUtility.UrlEncodeUnicode(unencodedString)));

            columnDetails.Add("UrlPathEncoded",

                (unencodedString => HttpUtility.UrlPathEncode(unencodedString)));

            columnDetails.Add("EscapedDataString",

                (unencodedString => Uri.EscapeDataString(unencodedString)));

            columnDetails.Add("EscapedUriString",

                (unencodedString => Uri.EscapeUriString(unencodedString)));

            columnDetails.Add("HtmlEncoded",

                (unencodedString => HttpUtility.HtmlEncode(unencodedString)));

            columnDetails.Add("HtmlAttributeEncoded",

                (unencodedString => HttpUtility.HtmlAttributeEncode(unencodedString)));

            columnDetails.Add("HexEscaped",

                (unencodedString

                    =>

                    {

                        // Uri.HexEscape can only handle the first 255 characters so for the 

                        //  Latin A-Extended characters, such as A, it will throw an 

                        //  ArgumentOutOfRange exception.                       

                        try

                        {

                            return Uri.HexEscape(unencodedString.ToCharArray()[0]);

                        }

                        catch

                        {

                            return "[OoR]";

                        }

                    }));

​

            char[] charactersToEncode = stringToEncode.ToCharArray();

            string[] stringCharactersToEncode = Array.ConvertAll<char, string>(charactersToEncode,

                (character => character.ToString()));

            DisplayCharacterTable<string>(stringCharactersToEncode, columnDetails);

        }

​

        private static void DisplayCharacterTable<TUnencoded>(TUnencoded[] unencodedArray,

            Dictionary<string, Func<TUnencoded, string>> mappings)

        {

            foreach (string key in mappings.Keys)

            {

                Console.Write(key.Replace(" ", "[space]") + " ");

            }

            Console.WriteLine();

​

            foreach (TUnencoded unencodedObject in unencodedArray)

            {

                string stringCharToEncode = unencodedObject.ToString();

                foreach (string columnHeader in mappings.Keys)

                {

                    int columnWidth = columnHeader.Length + 1;

                    Func<TUnencoded, string> encoder = mappings[columnHeader];

                    string encodedString = encoder(unencodedObject);

​

                    // ASSUMPTION: Column header will always be wider than encoded string.

                    Console.Write(encodedString.Replace(" ", "[space]").PadRight(columnWidth));

                }

                Console.WriteLine();

            }

        }

    }

}