using System;

using System.Collections.Generic;

using System.IO;

using System.Xml;

using System.Xml.Serialization;

​

public class ProjectHistoryModel

{

    public int  JobNumber { get; set; }

    public int DesignKey { get; set; }

    public string ProjectName { get; set; }

}

​

public static class ExtensionMethods

{

    public static string SerializeObject<T>(this T source)

    {

        if (source == null)

        {

            return string.Empty;

        }

        try

        {

            var xmlserializer = new XmlSerializer(typeof(T));

            var stringWriter = new StringWriter();

            using (var writer = XmlWriter.Create(stringWriter))

            {

                xmlserializer.Serialize(writer, source);

                return stringWriter.ToString();

            }

        }

        catch (Exception ex)

        {

            throw new Exception("An error occurred", ex);

        }

    }

    public static T DeserializeObject<T>(this string source) 

    {

        if (string.IsNullOrEmpty(source))

        {

            return default(T);

        }

        try

        {

            var xmlserializer = new XmlSerializer(typeof(T));

            var stringReader = new StringReader(source);

            using (var reader = XmlReader.Create(stringReader))

            {

                var result = xmlserializer.Deserialize(reader);

                return (T)result;

            }

        }

        catch (Exception ex)

        {

            throw new Exception("An error occurred", ex);

        }

    }

}

public class Program

{

​

    public static void Main()

    {

        var input = new List<ProjectHistoryModel>

        {

            new ProjectHistoryModel

            {

                JobNumber = 1,

                DesignKey = 2,

                ProjectName = "Three"

            },

            new ProjectHistoryModel

            {

                JobNumber = 4,

                DesignKey = 5,

                ProjectName = "Six"

            },

            new ProjectHistoryModel

            {

                JobNumber = 7,

                DesignKey = 8,

                ProjectName = "Nine"

            }

        };

        var serialized = input.SerializeObject();

        Console.WriteLine(serialized);

        var output = serialized.DeserializeObject<List<ProjectHistoryModel>>();

        foreach (var item in output)

        {

            Console.WriteLine("JobNumber: {0} DesignKey: {1} ProjectName: {2}", item.JobNumber, item.DesignKey, item.ProjectName);

        }

    }

}