LINQ to read XML

Use the below code for Linq to read xml:

void Main()
{
  StringBuilder result = new StringBuilder();
 
  //Load xml
  XDocument xdoc = XDocument.Load("data.xml");
 
  //Run query
  var lv1s = from lv1 in xdoc.Descendants("level1")
      select new {
        Header = lv1.Attribute("name").Value,
        Children = lv1.Descendants("level2")
      };
 
  //Loop through results
  foreach (var lv1 in lv1s){
    result.AppendLine(lv1.Header);
    foreach(var lv2 in lv1.Children)
      result.AppendLine(" " + lv2.Attribute("name").Value);
  }
 
  Console.WriteLine(result);
}

Try the code for nesting up to “levelN”:

void Main()
{
  XElement rootElement = XElement.Load(@"c:\events\test.xml");
  Console.WriteLine(GetOutline(0, rootElement));
}
 
private string GetOutline(int indentLevel, XElement element)
{
  StringBuilder result = new StringBuilder();
 
  if (element.Attribute("name") != null)
  {
    result = result.AppendLine(new string(' ', indentLevel * 2) + element.Attribute("name").Value);
  }
 
  foreach (XElement childElement in element.Elements())
  {
    result.Append(GetOutline(indentLevel + 1, childElement));
  }
 
  return result.ToString();
}

Simple way:

     foreach loops provides a good solution,

foreach (XElement level1Element in XElement.Load("data.xml").Elements("level1"))
{
  result.AppendLine(level1Element.Attribute("name").Value);
 
  foreach (XElement level2Element in level1Element.Elements("level2"))
  {
    result.AppendLine(" " + level2Element.Attribute("name").Value);
  }
}