C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleTest
{
    class Program
    {
        static void Main(string[] args)
        {
            bool QuitProgram = false;

            while (!QuitProgram)
            {
                Console.WriteLine("Please type your name or \"quit\" to exit");

                string Response = Console.ReadLine();

                if (Response.ToLower() == "quit")
                {
                    QuitProgram = true;
                }
                else
                {
                    DoWork(Response);
                }
            }
        }

        public static void DoWork(string Response)
        {
            Console.WriteLine("Hello {0}", Response);
        }
    }
}

Yanshof wrote:

simulate it in run time

static bool CharacterNeedsEscape(char c)
static bool CharacterNeedsEscape(char c)
{
    return c > '~' || c < ' ';
}pre>

Now the text node handling code checks each character in turn, if an escape is not needed the raw character is written, otherwise the <code>WriteCharEntity</code> method is called.

<pre>if (reader.NodeType == XmlNodeType.Text)
{
    string startingString = SecurityElement.Escape(reader.Value);
    char[] chars = startingString.ToCharArray();

    for (int i = 0; i < chars.Length; i++)
    {
        char c = chars[i];
        if (!CharacterNeedsEscape(c))
            writer.WriteRaw(chars, i, 1);
        else
            writer.WriteCharEntity(c);
    }
    return;
}