[Mono-list] Xml reading & writing.

[Jonathan Pryor]

On Wed, 2008-09-17 at 22:36 +0100, Neil Munro wrote:

> So I have this:
> 
> // Save it in the prefs.xml file.
> XmlDocument xmlDoc = new XmlDocument( );
>                 
> xmlDoc.Load( sPath_To_Prefs_File ); 
> 
> Now I know that the whole document is loaded into memory at this
> point, how would i traverse the document in memory to get to the
> <UpdateSource> section, read until there are no more of that tag and
> add a new update source after the last one and before the next line?

Read the documentation I pointed you to. :-)

To see if the UpdateSource element is present, you could learn XPath and
do:

        XmlNode updateSource = 
            xmlDoc.SelectSingleNode("/path/to/UpdateSource");
        if (updateSource == null) {
            // add updateSource
            XmlNode parent = xmlDoc.SelectSingleNode("/path/to");
            updateSource = xmlDoc.CreateElement ("UpdateSource");
            // fill updateSource with nested elements, attributes, etc.
            parent.AppendChild (updateSource);
        }

The above likely won't be perfect, but should be enough to get you
started...

Again, read the documentation.  It's full of examples.

 - Jon