C# Linq to XML query

Question

  
    
      
        
        
        <         


        

Answer 1

var result = xdoc.Descendants("World")
                 .Descendants("Animals")
                 .Descendants("Tab")
                 .Elements("Dogs")
                 .Where(n => n.Attribute("id").Value == "1");

Output:

<Dogs id="1">
  <Dog1></Dog1>
  <Dog2></Dog2>
  <Dog3></Dog3>
</Dogs>

Answer 2

Or use XPath:

xml.XPathSelectElements("/World/Animals/Tab/Dogs[@id=1]")

or

xml.XPathSelectElements("//Dogs[@id=1]")

which would find all Dogs wherever they occurred.

Answer 3

From your sample data I think you want

//from e in xml.Descendants("Animals").Descendants("Tab").Elements("Dogs")
from e in xml.Descendants("Animals").Elements("Tab").Descendants("Dogs")

And in the same line, Descendants("Animals") could be Elements("Animals") if you want to enforce the structure.

For the rest your query looks OK.