Question

I have the xml in the following format :

<parent>
          <child id="1"> test1 </child>
          <child id="2"> test2 </child>
</parent>

How can I get the csv of all the childnodes ? Like , this is how I need it :

<parent>
          <children>1|test1;2|test2</children>
</parent>

where | and ; are delimiters.

Any suggestions how it can be done using LINQ ?

Answer 1

var xml = @"<parent>
                <child id=""1""> test1 </child>
                <child id=""2""> test2 </child>
        </parent>";
XElement parentElement = XElement.Parse(xml);
var childElements = parentElement.Elements("child").ToList();
var concatenatedValue = string.Join(";", childElements.Select(c => c.Attribute("id").Value + "|" +c.Value).ToArray());
childElements.ForEach(c => c.Remove());
parentElement.Add(new XElement("child", concatenatedValue));

var newXml = parentElement.ToString();