using System;

using System.Text;

using System.Xml;

​

namespace SO_XML

{

    static class Vars

    {

        public static double infected = 0;

        public static double zombies = 0;

        public static double wolfs = 0;

    }

    public class Program

    {

        private static void Save()

        {

            var xWriter = new XmlTextWriter("Save1.xml", Encoding.UTF8);

            xWriter.WriteStartDocument();

            xWriter.Formatting = Formatting.Indented;

            xWriter.WriteStartElement("Variables");

​

                xWriter.WriteStartElement("Zombies");

                xWriter.WriteValue(Vars.zombies);

                xWriter.WriteEndElement();

​

                xWriter.WriteStartElement("Infected");

                xWriter.WriteValue(Vars.infected);

                xWriter.WriteEndElement();

​

                xWriter.WriteStartElement("Wolfs");

                xWriter.WriteValue(Vars.wolfs);

                xWriter.WriteEndElement();

​

            xWriter.WriteEndElement();

            xWriter.Close();

        }

        private static void Read()

        {

            XmlReader xReader = XmlReader.Create("Save1.xml");

            while (xReader.Read())

            {

                if (xReader.NodeType == XmlNodeType.Element)

                {

                    switch (xReader.Name)

                    {

                        case "Zombies":

                            Vars.zombies = xReader.ReadElementContentAsDouble();

                        break;

                        case "Infected":

                            Vars.infected = xReader.ReadElementContentAsDouble();

                        break;

                        case "Wolfs":

                            Vars.wolfs = xReader.ReadElementContentAsDouble();

                        break;

                    }

                }

            }

        }

        public static void Main(string[] args)

        {

            // set initial vals to not 0

            Vars.infected = 1;

            Vars.zombies = 1;

            Vars.wolfs = 1;

            Console.WriteLine(string.Format("Before Save: {0} | {1} | {2}", Vars.infected, Vars.zombies, Vars.infected));

            Save();

            // change vals after saved, so we can easy check data read back

            Vars.infected = 2;

            Vars.zombies = 3;

            Vars.wolfs = 4;

            Read();

            Console.WriteLine(string.Format("After Load: {0} | {1} | {2}", Vars.infected, Vars.zombies, Vars.infected));

            Console.ReadLine();

        }

    }

}

​