Grabbing a nodelist from a nodelist c# .net

Question

The following code gives me a nodeList to itterate over:

XPathNavigator thisNavigator = thisXmlDoc.CreateNavigator();
XPathNodeIterator dossierNodes = thisNavigator.Select("changedthisname/dossiers/dossier");

I am processing this nodeList, and i need to grab another nodelist out of this list. I am trying to do this by using this code:

XPathNavigator alineanodesNavigator = dossierNodes.Current;
XPathNodeIterator alineaNodes = alineanodesNavigator.Select("/dossier/alineas/alinea");

I am using this code inside the while(dossierNodes.MoveNext()) loop and want this nodelist to be filled up with all "allinea's". However i am not getting any results back to my alineaNodes iterator.

The document structure is like this:

How to get the alinea nodes from the current dossier node??

I debugged and this came out:

    Stream responseStream = response.GetResponseStream();
    StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.UTF8);
    string xml = reader.ReadToEnd();
    XmlDocument thisXmlDoc = new XmlDocument();
    thisXmlDoc.LoadXml(xml);

    XPathNavigator thisNavigator = thisXmlDoc.CreateNavigator();

Answer 1

You are already in the dossier node so when you put in a '/' in the beginning of the XPath query you are saying "From the parent node", which happens to already be the dossier node at this point. Change your XPath query to:

EDIT:

After seeing your output, I realize my mistake. You should just drop the leading forward slash from your original query.

"dossier/alineas/alinea"

And that should do the trick.

Answer 2

Linq to XML is perfect for this instance.

var alineaNodes = from alinea in XDocument.Load(alldata.xml).Descendents("alinea")
                  select alinea;

that returns an IEnumerable with all elements in the alldata.xml. Hope this helps. And really look into Linq it is great for these things.

Answer 3

Okay, i have solved this one.

Instead of trying to get the alinea's by using xpath i'll just use the SelectDescendants on my node navigator like what here:

            XPathNavigator alineanodesNavigator = dossierNodes.Current;
            XPathNodeIterator alineaNodes = alineanodesNavigator.SelectDescendants("alinea", "", false);


            List<Alinea> thisAlineaList = new List<Alinea>();

Answer 4

In your last call to Select(), use the following XPath expression: "//alinea".

The following code snippet iterates over alineas:

        XPathNavigator thisNavigator = doc.CreateNavigator();
        XPathNodeIterator dossierNodes = thisNavigator.Select("//dossier");
        while (dossierNodes.MoveNext())
        {
            XPathNavigator alineanodesNavigator = dossierNodes.Current;
            XPathNodeIterator alineaNodes = alineanodesNavigator.Select("//alinea");

            while (alineaNodes.MoveNext())
            {

            }
        }

Answer 5

The right full path is

changedthisname/dossiers/dossier/alineas/alinea

So, if you are selecting changedthisname/dossiers/dossier first, then the relative path is:

alineas/alinea