如果只有xml数据可用，如何使用LINQ to XML插入新节点？

Question

I have an xml file with the below structure:

<connections>
  <connection>   
    <serverName>serverName1</serverName>
    <dbName>dbName1</dbName>   
  </connection>
</connections>

I have a new connection as text data as shown below:

var xml="<connection><serverName>serverName2</serverName><dbName>dbName2</dbName></connection>";

var xDocument = XDocument.Load(HttpContext.Current.Server.MapPath(this.XmlDataFilePath));

How could I insert this new node to my document?

I tried this but it failed:

 xDocument.Root.AddAfterSelf(xml);

 xDocument.Save(HttpContext.Current.Server.MapPath(this.XmlDataFilePath));

Thanks,

Answer 1

Parse the XML into an XElement and then add that:

var element = XElement.Parse(xml);
xDocument.Root.Add(element);

Note this is not AddAfterSelf - you can't add a second root element as the peer of the first one. The code above will add a new child element after any existing ones, within the root element.