Insert new XML node using LINQ

Question

XML:

<Questions>
   <Question>
      <Id>1</Id>
      <Text>aaa</Text>
      <Reserver />
   </Question>
   <Question>
      <Id>2</Id>
      <Text>bbb</Text>
      <Reserver />
 </Question>
</Questions>

How can insert new Question using LINQ like this:

<Question>
      <Id>3</Id>
      <Text>ccc</Text>
      <Reserver />
 </Question>

Answer 1

XDocument doc = XDocument.Parse("<Questions>...</Questions>");
doc.Root.Add(
    new XElement("Question",
        new XElement("Id", 3),
        new XElement("Text", "ccc"),
        new XElement("Reserver"))
    );

Answer 2

You can create a new element like this:

var newElem = new XElement("Question",
    new XElement("Id", 3),
    ...
);
xdoc.Root.Add(newElem);