Unable to convert System.Xml.XmlNode to System.Xml.Linq.XElement

Question

I get an error Calling the GetListItems function, but it looks weird because it works in Visual Studio 2008 Express but not in Visual Basic 2010 Express:

 Dim ndQuery As XmlNode = xmlDoc.CreateNode(XmlNodeType.Element, "Query", "")

    Dim ndViewFields As XmlNode = xmlDoc.CreateNode(XmlNodeType.Element, "ViewFields", "")
    Dim ndQueryOptions As XmlNode = xmlDoc.CreateNode(XmlNodeType.Element, "QueryOptions", "")

    ndQueryOptions.InnerXml = "<IncludeMandatoryColumns>False</IncludeMandatoryColumns>" & _
                                "<DateInUtc>True</DateInUtc>"

    ndViewFields.InnerXml = "<FieldRef Name=""LinkFilename"" />" & _
                            "<FieldRef Name=""Empresa"" />" & _
                            "<FieldRef Name=""Puesto"" />" & _
                            "<FieldRef Name=""Fecha_x0020_Vigente"" />" & _
                            "<FieldRef Name=""Oferta_x0020_vigente"" />"

    ndQuery.InnerXml = ""

    Try

        Dim ndListItems As XmlNode = IntranetLists.GetListItems(ListUUID, Nothing, _
                                                    ndQuery, ndViewFields, Nothing, ndQueryOptions, Nothing)

And this is the function I call:

Public Function GetListItems(ByVal listName As String, ByVal viewName As String, ByVal query As System.Xml.Linq.XElement, ByVal viewFields As System.Xml.Linq.XElement, ByVal rowLimit As String, ByVal queryOptions As System.Xml.Linq.XElement, ByVal webID As String) As System.Xml.Linq.XElement
        Dim inValue As ListasIntranetGureak.GetListItemsRequest = New ListasIntranetGureak.GetListItemsRequest()
        inValue.Body = New ListasIntranetGureak.GetListItemsRequestBody()
        inValue.Body.listName = listName
        inValue.Body.viewName = viewName
        inValue.Body.query = query
        inValue.Body.viewFields = viewFields
        inValue.Body.rowLimit = rowLimit
        inValue.Body.queryOptions = queryOptions
        inValue.Body.webID = webID
        Dim retVal As ListasIntranetGureak.GetListItemsResponse = CType(Me,ListasIntranetGureak.ListsSoap).GetListItems(inValue)
        Return retVal.Body.GetListItemsResult
    End Function

Answer 1

I do not have VB 2008 support, but as far as I know, there has never been an automatic conversion (implicit or explicit) between XElementand XmlNode. LINQ-to-XML is largely parallel to the implementation of the DOM, just a few things (for example, XmlReaderas a source).

; , , , xml; # ( CreateReader, string):

XElement el = new XElement("foo",
     new XAttribute("abc","def"), new XElement("bar"));
var doc = new XmlDocument();
using (var reader = el.CreateReader()) {
    doc.Load(reader);
}
XmlNode node = doc.DocumentElement; // node could also be typed as XmlElement

( ):

XElement andBackAgain;
using(var reader = new XmlNodeReader(node)) {
    andBackAgain = XElement.Load(reader);
}