Question

I am newbie in LINQ to XML.I have two variable one and two and I want to set these variable values in attribute in XML.

 static void Main(string[] args)
    {
        string one = "first";
        string two = "Second";

        XDocument doc = XDocument.Load(test.xml);

    }

XML

    <Root>
  <Details XIndex="One" Index="">
    <abc></abc>
  </Details>
  <Details XIndex="Two" Index="">
    <xyz></xyz>
  </Details>
</Root>

Now please tell me how I can set One and two variables value in Index attribute in details node.

Example – I want below output.

<Root>
  <Details XIndex="One" Index="First">
    <abc></abc>
  </Details>
  <Details XIndex="Two" Index="Second">
    <xyz></xyz>
  </Details>
</Root>

Please tell me.

Thanks in advance.

Answer 1

You can use the XElement.SetAttributeValue() method:

var element = doc.Elements("Details")
                 .Single(x=>x.Attribute("XIndex").Value=="One");

element.SetAttributeValue("Index", "First");