Convert Object to XML using LINQ

Convert Object to XML using LINQ. Also the object contains other object list.

Following is the Classes used in our program：

    public class Order
    {
        public string OrderId { get; set; }
        public string OrderNumber { get; set; }
        public string OrderDate { get; set; }
        public string OrderValue { get; set; }
        public string Reference1 { get; set; }
        public string Reference2 { get; set; }
        public string DeliveryNotes { get; set; }
        public string Status { get; set; }
        public BillingCustomer OrderBillingCustomer { get; set; }
        public EndCustomer OrderEndCustomer { get; set; }
        public List<OrderLineItem> OrderLineItem { get; set; }
    }

    public class BillingCustomer
    {
        public string AccountID { get; set; }
        public string AccountName { get; set; }
        public string AccountNumber { get; set; }
        public string ABN { get; set; }
        public string GPID { get; set; }
        public string Address { get; set; }
        public string Suburb { get; set; }
        public string Postcode { get; set; }
        public string State { get; set; }
        public string Phone { get; set; }
        public string Tax { get; set; }
        public string Email { get; set; }
        public string CreditType { get; set; }
    }

    public class EndCustomer
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Phone { get; set; }
        public string Mobile { get; set; }
        public string Email { get; set; }
        public string Address1 { get; set; }
        public string Address2 { get; set; }
        public string Address3 { get; set; }
        public string Suburb { get; set; }
        public string Postcode { get; set; }
        public string State { get; set; }
        public string Country { get; set; }
    }

    public class OrderLineItem
    {
        public string LineItemID { get; set; }
        public string SKU { get; set; }
        public string Title { get; set; }
        public string Quantity { get; set; }
        public string SalesPriceEx { get; set; }
        public string SalesPriceInc { get; set; }
        public string DispatchPoint { get; set; }
        public string FreightMethod { get; set; }
        public string Status { get; set; }
        public string OrderID { get; set; }
    }

So now you can see the detail of our function:

        public static void GenerateXmlFile(List<Order> orderList, string orderExportXmlPath)
        {
            XDocument orderDoc = new XDocument(
                new XElement("Orders",
                    from orderItem in orderList
                    select new XElement("Order",
                               new XElement("OrderID", orderItem.OrderId),
                               new XElement("OrderNumber", orderItem.OrderNumber),
                               new XElement("OrderDate", orderItem.OrderDate),
                               new XElement("OrderValue", orderItem.OrderValue),
                               new XElement("Reference1", orderItem.Reference1),
                               new XElement("Reference2", orderItem.Reference2),
                               new XElement("DeliveryNotes", orderItem.DeliveryNotes),
                               new XElement("Account",
                                    new XElement("AccountID", orderItem.OrderBillingCustomer.AccountID),
                                    new XElement("AccountName", orderItem.OrderBillingCustomer.AccountName),
                                    new XElement("AccountNumber", orderItem.OrderBillingCustomer.AccountNumber),
                                    new XElement("ABN", orderItem.OrderBillingCustomer.ABN),
                                    new XElement("GPID", orderItem.OrderBillingCustomer.GPID),
                                    new XElement("Address", orderItem.OrderBillingCustomer.Address),
                                    new XElement("Suburb", orderItem.OrderBillingCustomer.Suburb),
                                    new XElement("Postcode", orderItem.OrderBillingCustomer.Postcode),
                                    new XElement("State", orderItem.OrderBillingCustomer.State),
                                    new XElement("Phone", orderItem.OrderBillingCustomer.Phone),
                                    new XElement("Tax", orderItem.OrderBillingCustomer.Tax),
                                    new XElement("Email", orderItem.OrderBillingCustomer.Email),
                                    new XElement("CreditType", orderItem.OrderBillingCustomer.CreditType)
                                   ),
                               new XElement("EndCustomer",
                                    new XElement("FirstName", orderItem.OrderEndCustomer.FirstName),
                                    new XElement("LastName", orderItem.OrderEndCustomer.LastName),
                                    new XElement("Phone", orderItem.OrderEndCustomer.Phone),
                                    new XElement("Mobile", orderItem.OrderEndCustomer.Mobile),
                                    new XElement("Email", orderItem.OrderEndCustomer.Email),
                                    new XElement("Address1", orderItem.OrderEndCustomer.Address1),
                                    new XElement("Address2", orderItem.OrderEndCustomer.Address2),
                                    new XElement("Address3", orderItem.OrderEndCustomer.Address3),
                                    new XElement("Suburb", orderItem.OrderEndCustomer.Suburb),
                                    new XElement("Postcode", orderItem.OrderEndCustomer.Postcode),
                                    new XElement("State", orderItem.OrderEndCustomer.State),
                                    new XElement("Country", orderItem.OrderEndCustomer.Country)
                                   ),
                               new XElement("LineItems",
                                    from item in orderItem.OrderLineItem
                                    select new XElement("LineItem",
                                                new XElement("LineItemID", item.LineItemID),
                                                new XElement("SKU", item.SKU),
                                                new XElement("Title", item.Title),
                                                new XElement("Quantity", item.Quantity),
                                                new XElement("SalesPriceEx", item.SalesPriceEx),
                                                new XElement("SalesPriceInc", item.SalesPriceInc),
                                                new XElement("DispatchPoint", item.DispatchPoint),
                                                new XElement("FreightMethod", item.FreightMethod)
                                               )
                                   )
                )));
            orderDoc.Save(orderExportXmlPath);
        }

Finally we can get the Xml file:

<?xml version="1.0" encoding="utf-8"?>
<Orders>
  <Order>
    <OrderID>a00O0000003ZbnEIAS</OrderID>
    <OrderNumber>CM000-047</OrderNumber>
    <OrderDate>2013-11-07T00:00:00.000Z</OrderDate>
    <OrderValue>2519.95</OrderValue>
    <Reference1>11</Reference1>
    <Reference2>22</Reference2>
    <DeliveryNotes>node001</DeliveryNotes>
    <Account>
      <AccountID>0019000000RXEOVAA5</AccountID>
      <AccountName>Test Commercial Customer</AccountName>
      <AccountNumber></AccountNumber>
      <ABN></ABN>
      <GPID></GPID>
      <Address></Address>
      <Suburb></Suburb>
      <Postcode>3000</Postcode>
      <State>VIC</State>
      <Phone>03 9304 8000</Phone>
      <Tax></Tax>
      <Email>test@test.com</Email>
      <CreditType>Amount</CreditType>
    </Account>
    <EndCustomer>
      <FirstName></FirstName>
      <LastName></LastName>
      <Phone></Phone>
      <Mobile></Mobile>
      <Email></Email>
      <Address1>11</Address1>
      <Address2>22</Address2>
      <Address3>33</Address3>
      <Suburb></Suburb>
      <Postcode></Postcode>
      <State>Finalised</State>
      <Country></Country>
    </EndCustomer>
    <LineItems>
      <LineItem>
        <LineItemID>a01O0000007CQ9BIAW</LineItemID>
        <SKU>a12345</SKU>
        <Title>product a</Title>
        <Quantity>10.0</Quantity>
        <SalesPriceEx>10.5</SalesPriceEx>
        <SalesPriceInc>11.55</SalesPriceInc>
        <DispatchPoint>a02O0000005aDHWIA2</DispatchPoint>
        <FreightMethod>Pickup</FreightMethod>
      </LineItem>
      <LineItem>
        <LineItemID>a01O0000007F71EIAS</LineItemID>
        <SKU>20000001</SKU>
        <Title>FLEETWOOD MAC - THE DANCE</Title>
        <Quantity>20.0</Quantity>
        <SalesPriceEx>6.43</SalesPriceEx>
        <SalesPriceInc>7.07</SalesPriceInc>
        <DispatchPoint>a02O0000005aDHWIA2</DispatchPoint>
        <FreightMethod>Pickup</FreightMethod>
      </LineItem>
      <LineItem>
        <LineItemID>a01O0000007F71FIAS</LineItemID>
        <SKU>928186</SKU>
        <Title>HONEY</Title>
        <Quantity>50.0</Quantity>
        <SalesPriceEx>9.07</SalesPriceEx>
        <SalesPriceInc>9.98</SalesPriceInc>
        <DispatchPoint>a02O0000005aDHcIAM</DispatchPoint>
        <FreightMethod>Pickup</FreightMethod>
      </LineItem>
    </LineItems>
  </Order>
</Orders>

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