using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml.Serialization;

using System.Data;

using System.ServiceModel;

using System.Xml;

using System.Runtime.Serialization;

namespace Artech.XmlSerializerDemos

{

    [DataContract]

    public class DataBase2

    {

        [DataMember(Order=)]

        public Guid ID

        {

            get;

            set;

        }

        private DateTime _date;

        [DataMember(Order=)]

        public DateTime Date

        {

            get;

            set;

        }

       [DataMember(Order = )]

        public string Customer

        {

            get;

            set;

        }

        [DataMember(Order = )]

        public string ShipAddress

        {

            get;

            set;

        }

        [DataMember(Order = )]

        public double TotalPrice

        {

            get;

            set;

        }

    }

    public class Order2 : DataBase2

    {

        [DataMember(Order = )]

        public string PaymentType

        {

            get;

            set;

        }

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml;

using System.Xml.Serialization;

using System.Runtime.Serialization;

using System.Diagnostics;

namespace Artech.XmlSerializerDemos

{

    class Program

    {

        static void Main(string[] args)

        {

            #region DataContract

            Order2 order = new Order2()

            {

                ID = Guid.NewGuid(),

                Date = DateTime.Today,

                Customer = "Foo",

                ShipAddress = "airport address",

                TotalPrice = ,

                PaymentType = "credit card"

            };

            Serialize<Order2>(order, @"E:\Order.xml");

            #endregion

            #region xml Attribute

            //Order order = new Order()

            //{

            //    ID = Guid.NewGuid(),

            //    Date = DateTime.Today,

            //    Customer = "Foo",

            //    ShipAddress = "airport address"

            //};

            //Serialize<Order>(order, @"E:\Order.xml");

            #endregion

        }

        static void Serialize<T>(T instance, string fileName)

        {

            #region xml Attribute

            //using (XmlWriter writer = new XmlTextWriter(fileName, Encoding.UTF8))

            //{

            //    XmlSerializer serializer = new XmlSerializer(typeof(T));

            //    serializer.Serialize(writer, instance);

            //}

            #endregion

            #region  xml datacontract

            using (XmlWriter writer = new XmlTextWriter(fileName, Encoding.UTF8))

            {

                DataContractSerializer serializer = new DataContractSerializer(typeof(T));

                serializer.WriteObject(writer, instance);

            }

            #endregion

            Process.Start(fileName);

        }

    }

}