Parsing result from WCF WebHttp Service

I have a very simple WCF service running which returns the following (from a basic new project) xml:

  <ArrayOfSampleItem xmlns="http://schemas.datacontract.org/2004/07/WcfRestService1" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
     <SampleItem>
         <Id>1</Id>
         <StringValue>Hello</StringValue>
     </SampleItem>
  </ArrayOfSampleItem>

I am then consuming this in a Windows Phone 7 app. The result is coming back fine however I'm having problems parsing the xml. This is the code I am using on the callback after completion of the request:

        XDocument xmlDoc = XDocument.Parse(e.Result);

        itemsFetched.ItemsSource = from item in xmlDoc.Descendants("SampleItem")
                                   select new Product()
                                              {
                                                  Id = item.Element("Id").Value,
                              开发者_开发技巧                    StringValue = item.Element("StringValue").Value
                                              };

The collection is not populated with this, when I try adding the namespace:

        XNamespace web = "http://schemas.datacontract.org/2004/07/WcfRestService1";

        XDocument xmlDoc = XDocument.Parse(e.Result);

        itemsFetched.ItemsSource = from item in xmlDoc.Descendants(web + "SampleItem")

The item is found but I get a null exception when it attempts to get the Id value.

Any help would be much appreciated.

Well the xmlns="..." puts the elements and all its descendants in the namespace so you need to use your XNamespace object web anywhere where you access elements:

XDocument xmlDoc = XDocument.Parse(e.Result);
XNamespace web = "http://schemas.datacontract.org/2004/07/WcfRestService1";

itemsFetched.ItemsSource = from item in xmlDoc.Descendants(web + "SampleItem")
                           select new Product()
                                              {
                                                  Id = item.Element(web + "Id").Value,
                                                  StringValue = item.Element(web + "StringValue").Value
                                              };