"George W." <noSpam@forme.com> wrote in message
news:eCfO5sYTDHA.1724@TK2MSFTNGP10.phx.gbl...
> Okay, I'm a C#/XML newbie, and I've been wrestling with this for a while
> now, checked dotnet sites, articles, MSDN Library, etc. and haven't been
> able to determine why this is happening.
>
> I have an xml file that I am loading into an XmlDocument and then trying
> to add a child element to the root element. I keep getting:
> System.ArgumentException: The reference node is not a child of this node.
>
> This occurs at the line where I'm using XmlDocument.InsertBefore.
>
> Here's my code:
>
> ----CODE----
> // Instantiate XmlDocument and load the file into it
> XmlDocument doc = new XmlDocument();
> doc.Load("/inetpub/wwwroot/xmlfun/news.xml");
>
> // bookmark the root element
> XmlNode root = doc.DocumentElement;
>
> // set up my child element I want to insert
> XmlElement elem = doc.CreateElement("news");
> elem.InnerText = EnterNewsBox.Text;
> elem.SetAttribute("date", DateTime.Now.ToLongDateString());
> elem.SetAttribute("time", DateTime.Now.ToLongTimeString());
> elem.SetAttribute("poster", PosterBox.Text);
>
> // The exception occurs here:
> doc.InsertBefore(elem, root.FirstChild);
>
> doc.Save("/inetpub/wwwroot/xmlfun/news.xml");
> ------------
>
>
> ----"news.xml"----
> <?xml version="1.0"?>
> <updates>
> <news date="Friday, July 18, 2003" time="8:00:37 AM">text is here</news>
> </updates>
> ------------------
>
> I want my child element, elem, to go about the current "news" element
> that is there, so the output will be:
>
> ----"news.xml"----
> <?xml version="1.0"?>
> <updates>
> <news date="Current dateblahblah" time="12:00:00 AM" poster="Bill">text
> is here</news>
> <news date="Friday, July 18, 2003" time="8:00:37 AM">text is here</news>
> </updates>
> ------------------
>