Question

<GlobalNavigation>
<primarylink>
<secondarylink>
    <linkid>1</linkid>
    <linkName>3</linkname>
    <secondary>
        <leftnav>
            <linkid>left1</linkid>
            <linkName>linktext</linkname>
        </leftnav>
    </secondary>
</secondarylink>
</GlobalNavigation>

i want to read leftnav linkname by giving linkid.

Answer 1

The simplest way is to use LINQ to XML:

var doc = XDocument.Load(...);

string linkId = "left1";
var linkName = doc.Descendants("leftnav")
                  .Elements("linkid")
                  .Where(x => x.Value == linkId)
                  .Single()
                  .Parent.Element("linkName").Value;

In other words:

• Look in each leftnav element
• Look in each linkid element directly under it
• Find a linkid element with the desired value
• There should be exactly one of these (there are other options you may wish to use here, which would change the rest of the solution). Select this one linkid element.
• Take the parent element
• Find the first linkName element under it
• Extract the value (i.e. the text within it)