PurchaseList.xmlAppend XML с XElement
<purchaseList>
<user id="13004">
<books>
<book isbn="1111707154" title="Music Potter 2" author="customer" price="10" currency="RM" />
</books>
</user>
</purchaseList>
WebService.cs
xDoc = XDocument.Load(serverPath + "PurchaseList.xml");
XElement xNewBook = (XElement)(from user in xDoc.Descendants("user")
where (String)user.Attribute("id") == userID
from books in user.Elements("books")
select user).Single();
XElement xPurchaseBook = new XElement("book",
new XAttribute("isbn", xISBN),
new XAttribute("title", xTitle),
new XAttribute("author", "customer"),
new XAttribute("price", xPrice),
new XAttribute("currency", xCurrency));
xNewBook.Add(xPurchaseBook);
xNewBook.Save(localPath + "PurchaseList.xml");
Выход:
<user id="13004">
<books>
<book isbn="1111707154" title="Music Potter 2" author="customer" price="10" currency="RM" />
</books>
<book isbn="1439056501" title="Harry Potter" author="customer" price="10" currency="RM" />
</user>
Ожидаемый результат:
<purchaseList>
<user id="13004">
<books>
<!-- Should append inside here -->
<book isbn="1111707154" title="Music Potter 2" author="customer" price="10" currency="RM" />
<book isbn="1439056501" title="Harry Potter" author="customer" price="10" currency="RM" />
</books>
</user>
</purchaseList>
Как вы можете видеть, я хочу добавить xml-файл с помощью XElement, но вывод не ожидается, он даже удалит тег и добавит его в неправильное положение.