Xml analysis using XDocument - deserialization

Question

I have the following xml

<?xml version="1.0" encoding="UTF-8"?> <Actions> <add order-id="1" symbol="ABC" price="5" quantity="200" /> <add order-id="2" symbol="123" price="15" quantity="100" /> <add order-id="3" symbol="ABC" price="5" quantity="300" /> <add order-id="4" symbol="ABC" price="7" quantity="150" /> <edit order-id="1" price="7" quantity="200" /> <remove order-id="4" /> <add order-id="5" symbol="123" price="17" quantity="300" /> <add order-id="6" symbol="123" price="12" quantity="150" /> <edit order-id="3" price="7" quantity="200" /> <remove order-id="5" /> </Actions> 

I need to parse this using linq into the following object structure:

  internal class OrderAction { private readonly Action action; private readonly Order order; public Action Action { get { return action; }} public Order Order { get { return order; }} public OrderAction(Action action,Order order) { this.action = action; this.order = order; } } 

where is the action public enum Action { ADD, REMOVE, EDIT }

the order is as follows:

 class Order { public Order(long orderId, String symbol, int price, int quantity) { this.orderId = orderId; this.symbol = symbol; this.price = price; this.quantity = quantity; } public long orderId { get; private set; } public String symbol { get; private set; } public int price { get; private set; } public int quantity { get; private set; } } 

I need to load xml in xdocument and find all IEnumerable orders in the file. How can I do this without resorting to serialization attributes?

Answer 1

What should be the values ​​of the missing Order properties in the case of "edit and delete"? I accepted the default values ​​for string and int ...

This will be the LINQ statement (assuming your XDocument is called doc ):

 var result = doc .Root .Elements() .Select(elem => new OrderAction ( (Action)Enum.Parse(typeof(Action), elem.Name.LocalName.ToUpper()), new Order ( elem.Attributes("order-id").Select(x => long.Parse(x.Value)).FirstOrDefault(), elem.Attributes("symbol").Select(x => x.Value).FirstOrDefault(), elem.Attributes("price").Select(x => int.Parse(x.Value)).FirstOrDefault(), elem.Attributes("quantity").Select(x => int.Parse(x.Value)).FirstOrDefault() ) )); 

Answer 2

here is my best shot

  XElement doc = XElement.Load("d:\\tst.xml"); List<OrderAction> lst = doc.Elements().Select(x => new OrderAction( (Action) Enum.Parse(typeof (Action), x.Name.ToString().ToUpper()), new Order( long.Parse(x.Attribute("order-id").Value), x.Attribute("symbol") != null ? x.Attribute("symbol").Value : "", x.Attribute("price") != null ? int.Parse(x.Attribute("price").Value) : 0, x.Attribute("quantity") != null ? int.Parse(x.Attribute("quantity").Value): 0)) ).ToList(); 

it took me a while ... i'm not used to that big linq analysis