Testing DataContractSerializer in .Net 4.5.1

DCSerializerTest.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.Serialization;
using System.IO;
using System.Xml;

namespace DCSerializerTest
{
    [DataContract]
    public class KeywordFunctionMap
    {
        [DataMember]
        public Dictionary<string, string> Map { get; set; }

        public KeywordFunctionMap()
        {
            Map = new Dictionary<string, string>();
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var serializer = new DataContractSerializer(typeof(KeywordFunctionMap));
            string xmlString;

            var obj = new KeywordFunctionMap();
            obj.Map.Add("1", "one");

            using (var sw = new StringWriter())
            {
                using (var writer = new XmlTextWriter(sw))
                {
                    writer.Formatting = Formatting.Indented;
                    serializer.WriteObject(writer, obj);
                    writer.Flush();
                    xmlString = sw.ToString();
                }
            }

            Console.WriteLine(xmlString);
            Console.ReadKey();
        }
    }
}