Question

Somehow, using linq I can’t test it with this CUF field in the beginning:

<NFe>
    <infNFe versao="1.0" Id="NFe0000000000">
        <ide>
             <cUF>35</cUF>
             <!--...-->
        </ide>
    </infNFe>
</NFe>

With the following code:

XDocument document = XDocument.Load(@"c:\nota.xml");
            var query = from NFe in document.Descendants("NFe")
                        select new
                        {
                            cuf = NFe.Element("infNFe").Element("ide").Element("cUF").Value
                        };

The whole XML loads into document (checked) but NFe.cuf gives me nothing. I guess the parameters inside the nodes are messing it up..

How do I get this “cuf” with linq?
What if I wanted the Id parameter in infNFe ?

–[EDIT]–

I had forgotten to give the “silly url in the beginning”, what happens is that it is the NAMESPACE, (the non-displaying of the namespace of the xml in Firefox contributed)

Now this works:

        XNamespace ns = "http://www.portalfiscal.inf.br/nfe";
        XElement root = XElement.Load(@"c:\nota.xml");

        textBox1.Text = root.Element(ns + "infNFe").Element(ns + "ide").Element(ns + "cUF").Value;

Is there a way to set the namespace somewhere, and not needing to put it in every single field call ?

Answer 1

You don’t really need that full LINQ query – a single one-liner will do:

string cuf = document.Root.Element("infNFe").Element("ide").Element("cUF").Value;
// cuf = 35

The same for the ID:

string id = document.Root.Element("infNFe").Attribute("Id").Value;
// id = NFe0000000000