Question

I use MS Studio 2010 Express for Windows Phone to build the app. In my app, I got the http respond and read it in string then I deserializer into the class object. It works fine in the class without List collection as a property. When it deserializer the class with List property, it got the error like this

Error in line 12 position 5. Expecting state  'Element'.. Encountered 'EndElement'  with name  'ContactList', namespace  'http://schemas.datacontract.org/2004/07/DataObjects’.

I think I can read the xml and assign the value into the class. I searched to read xml file and a lot of website mentions to use XDocument .Prase method or xlmDocument.Load. However event adding the System.Xml.Ling as reference , I still cannot see XDocument .Parse method or xlmDocument . Would someone tell me what I should do in order to assign the following value into the class?

There is my class object:

public class CallDetails
{
    public int id { get; set; }
    public string summary { get; set; }
    public string errorMsg { get; set; }
    public int parentCallid { get; set; }
    public string parentCallURL { get; set; }
    public string assignedTo { get; set; }
    public string OrgName { get; set; }
    public DateTime onHoldSince { get; set; }
    public DateTime onHoldUntil { get; set; }
    public string requester { get; set; }
    public bool isOnHold { get; set; }
    private List<Contact> m_ContactList = new List<Contact>();

    public List<Contact> ContactList
    {
        get { return m_ContactList; }

    }
}

There is the respond:

<?xml version="1.0" encoding="utf-8"?><CallDetails xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/DataObjects">
<ContactList>
      <Contact>
          <Method>PriPhone</Method>
          <Number>[phone]</Number>
      </Contact>
      <Contact>
          <Method>Fax</Method>
          <Number>[phone]</Number>
      </Contact>
  </ContactList>
  <errorMsg
      i:nil="true" />
  <id>0</id>
  <isOnHold>false</isOnHold>
  <onHoldSince>0001-01-01T00:00:00</onHoldSince>
  <onHoldUntil>0001-01-01T00:00:00</onHoldUntil>
  <parentCallURL>/Call/349551</parentCallURL>
  <parentCallid>0</parentCallid>
  <requester>Peter </requester>  
  <summary>Mobile Application Research</summary>
</CallDetails>

Answer 1

Just adding the reference to System.Xml.Linq won’t do it, you also need to reference the namespace in the class header:

using System.Xml.Linq;

Then you can call something like XDocument doc = XDocument.Parse(content);. However, from what I can tell, you are trying to deserialize data, so you might want to use the XmlSerializer class instead for all the core work. You can find some code ‘ispiration’ here.