Question

I’m new at this so bear with me. Using C# and LINQ, I am trying to pull out one record from an XML file and I want to bind it’s Elements and Attributes to individual textblocks.

Lets say I have this xml file named Test.xml:

<Data>
  <Test id=1>
     <Text>"First Record"</Text>
  </Test>
  <Test id=2>
     <Text>"Second Record"</Text>
  </Test>
<Data>

I want to pass in a variable for the id so i can pull out that records information and bind it to individual textblocks

var r = 2  // just hardcoding for the example

XDocument d = XDocument.Load("Test.xml");

var q = from t in d.Descendants("Test")
where t.Attribute("id").Value == r  
select new
{
   id = t.Attribute("id").Value,
   text = t.Element("text").Value
}

Now I would like to bind “id” and “text” to indivual Text blocks

idTextBlock.Text = id
textTextBlock.Text = text

This of course throws up all sorts of errors about id and text “not existing in this context”. All the examples I have seen have simply put the output lumped to a single string on the console which doesn’t help me. I am really new (2nd week) to programming so I may be doing this completely wrong. ANY assistance would be appreciated. Thanks!

Answer 1

I’ve corrected XML you’ve provided to get query below worked.

int r = 2;
XDocument xdoc = XDocument.Load("Test.xml");            
string id = r.ToString();
string text = xdoc.Descendants("Test")
                  .Where(d => d.Attribute("id").Value == id)                
                  .Descendants("Text")
                  .Select(n => n.Value)
                  .SingleOrDefault(); 

---

Corrected XML: (Closed Data tag, id attribute value enclosed in double quotes)

<Data>   
  <Test id="1"> 
     <Text>"First Record"</Text>   
  </Test>   
  <Test id="2">
      <Text>"Second Record"</Text>   
  </Test> 
</Data>