Question

I have a xml like this.

<?xml version="1.0" encoding="utf-8" ?>
<Category ID="1" AICategoryName="Schedule K: Income/Loss" Taxonomy="K">
   <Level1 ID="11965" Name="Guaranteed payments" Taxonomy="4">
      <Level2 ID="27058" Name="Gtd Pmts(trade/bus) to Sch. M-1" Taxonomy="1"> 
      </Level2>

      <Level2 ID="27059" Name="Gtd Pmts not to Sch. M-1" Taxonomy="2">      
      </Level2>
   </Level1>

   <Level1 ID="119652" Name="2Guaranteed payments" Taxonomy="4">
      <Level2 ID="227058" Name="2Gtd Pmts(trade/bus) to Sch. M-1" Taxonomy="1"> 
      </Level2>

      <Level2 ID="227059" Name="2Gtd Pmts not to Sch. M-1" Taxonomy="2">      
      </Level2>
   </Level1>
</Category>

I want to get the child nodes under a parent node by providing the parent node attribite ID.

for example if I provide Level1 and 11965, I should get all the level 2 nodes and their Name and IDs.

I have tried this code.

XDocument xd = XDocument.Load(xmlPath);

        var xl = from xml2 in xd.Descendants("Level1")
                 where xml2.Parent.Attribute("ID").Value == parentNode.ID
                 select xml2;

But the code yeilds no results. also once I get the xl, how can I iterate through it to get child node names and IDs?

Answer 1

XDocument xd = XDocument.Load(xmlPath);
var nodes = (from n in xd.Root.Desendants(tagName/*Level1*/) where n.Attribute("Id").Value == "idValue" select n.Elements()).single().select(n=>{return new{
Id = n.attribute("Id").value,
Name = n.attribute("Name").value,
Taxonomy = n.attribute("Taxonomy").value
}});

you can also change the code above if the tag name requested is always “Level1” and the xml struvvture is fixed, to this.

XDocument xd = XDocument.Load(xmlPath);
var nodes = (from n in xd.Root.Elements("Level1") where n.Attribute("Id").Value == "idValue" select n.Elements()).single().select(n=>{return new{
    Id = n.attribute("Id").value,
    Name = n.attribute("Name").value,
    Taxonomy = n.attribute("Taxonomy").value
    }});