Linq读取XML数据

1、XML数据格式：
<?xml version="1.0"?>
<customers>
  <customer>
    <id>ALFKI</id>
    <name>Alfreds Futterkiste</name>
    <address>Obere Str. 57</address>
    <city>Berlin</city>
    <postalcode>12209</postalcode>
    <country>Germany</country>
    <phone>030-0074321</phone>
    <fax>030-0076545</fax>
    <orders>
      <order>
        <id>10643</id>
        <orderdate>1997-08-25T00:00:00</orderdate>
        <total>814.50</total>
      </order>
      <order>
        <id>10692</id>
        <orderdate>1997-10-03T00:00:00</orderdate>
        <total>878.00</total>
      </order>
      <order>
        <id>10702</id>
        <orderdate>1997-10-13T00:00:00</orderdate>
        <total>330.00</total>
      </order>
      <order>
        <id>10835</id>
        <orderdate>1998-01-15T00:00:00</orderdate>
        <total>845.80</total>
      </order>
      <order>
        <id>10952</id>
        <orderdate>1998-03-16T00:00:00</orderdate>
        <total>471.20</total>
      </order>
      <order>
        <id>11011</id>
        <orderdate>1998-04-09T00:00:00</orderdate>
        <total>933.50</total>
      </order>
    </orders>
  </customer>
</customers>
2、Customer类：
public class Customer
    {
        public string CustomerID { get; set; }
        public string CompanyName { get; set; }
        public string Address { get; set; }
        public string City { get; set; }
        public string Region { get; set; }
        public string PostalCode { get; set; }
        public string Country { get; set; }
        public string Phone { get; set; }
        public string Fax { get; set; }
        public Order[] Orders { get; set; }
    }
3、读取数据
List<Customer> lists = (from customer in XDocument.Load("Customers.xml").Root.Elements("customer")
                                    select new Customer
                                    {
                                        CustomerID = (string)customer.Element("id"),
                                        CompanyName = (string)customer.Element("name"),
                                        Address = (string)customer.Element("address"),
                                        City = (string)customer.Element("city"),
                                        Region = (string)customer.Element("region"),
                                        PostalCode = (string)customer.Element("postalcode"),
                                        Country = (string)customer.Element("country"),
                                        Phone = (string)customer.Element("phone"),
                                        Fax = (string)customer.Element("fax"),
                                        Orders = (from order in customer.Elements("orders").Elements("order")
                                                  select new Order
                                                  {
                                                      OrderID = (int)order.Element("id"),
                                                      OrderDate = (DateTime)order.Element("orderdate"),
                                                      Total = (decimal)order.Element("total")
                                                  }).ToArray()
                                    }).ToList();