Question

Imagine a xml file like this:

<Document>
   <Tests>
      <Test>
          <Name>A</Name>
          <SubTest>
              <Test>
                 <Name>B</Name>
                 <Value>100</Value>
              </Test>
           </SubTest>
       </Test>
      <Test>
          <Name>C</Name>
          <SubTest>
              <Test>
                 <Name>D</Name>
                 <Value>200</Value>
              </Test>
           </SubTest>
       </Test>
    </Tests> 
</Document>

I use a method to access the B value, but I need to get name A as well, but I only now that value B exist in my XML file (doc is XmlDocument):

public class TestData
{
public string Parent {get;set;}
public string Name {get; set;}
public int Value {get;set;} 
}

private TestData GetResult(string name)
{
   TestData data = new TestData();
   data.Name = name;
   data.Value = 
   int.Parse(doc.SelectSingleNode("Document/Tests/Test/SubTest/Test[Name = '" + name + "']/Value").InnerText);

   data.Parent = null; //How can I get string A using the above xpath   

   return data;
}

So, the question is, how can I access A in the above method?

Answer 1

You can use this XPath:

Document/Tests/Test[SubTest/Test/Name = 'B']/Name

or:

var nodeTest = 
    doc.SelectSingleNode("Document/Tests/Test[SubTest/Test/Name = 'B']");

var name = nodeTest.SelectSingleNode("Name").InnerText;
var value = nodeTest.SelectSingleNode("SubTest/Test/Value").InnerText;