[英]Parsing xml using XDocument - Deserialization
我有以下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>
我需要使用linq將其解析為以下對象結構:
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;
}
}
動作是public enum Action { ADD, REMOVE, EDIT }
命令如下:
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; }
}
我需要將xml加載到xdocument中,並在文件中找到所有IEnumerable的orderactions。 我如何做到這一點,而不必求助於序列化屬性?
在“編輯和刪除”的情況下,缺少的Order
屬性的值應該是什么?我假設string
和int
的默認值...
這將是LINQ語句(假設您的XDocument
稱為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()
)
));
這是我最好的鏡頭
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();
我花了一段時間...我不習慣這么大的linq解析
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