Dynamically writing child nodes to an XML file.

1) What does your XML file look like?  

2) .NET version

Bob

Hi, using VB .NET 2005. Here's my XML :

<Configuration>
    <DATES>
    <sunday>1</sunday>
    <monday>1</monday>
    <tuesday>0</tuesday>
    <wednesday>1</wednesday>
    <thursday>1</thursday>
    <friday>0</friday>
    <saturday>1</saturday>
  </DATES>
  <TIME>
    <sunday>04:20:00 AM-08:00:00 PM</sunday>
    <monday>07:20:00 AM-09:00:00 PM</monday>
    <tuesday>03:20:00 AM-10:00:00 PM</tuesday>
    <wednesday>04:20:00 AM-08:00:00 PM</wednesday>
    <thursday>05:20:00 AM-08:00:00 PM</thursday>
    <friday>06:20:00 AM-08:30:00 PM</friday>
    <saturday>07:20:00 AM-08:00:00 AM</saturday>
  </TIME>
  <EMAILS enabled="1">
<p>user1@test.ca</p>
<p>test@test.ca</p>
  </EMAILS>
    <MESSAGE>
    <p>Software crashed, process have been restarted.</p>
  </MESSAGE>
  <DBWATCH enabled="1">
    <threshold>1500</threshold>
    <localmsg>1</localmsg>
    <sendmail>1</sendmail>
    <sendwarning>1</sendwarning>
    <warningthreshold>1000</warningthreshold>
    <warningunit>MB</warningunit>
  </DBWATCH>
</Configuration>


So as you can see under Emails, I have two email addresses. If in the listbox I change, delete or add email adresses, I might have to add nodes... I was thinking of deleting all child nodes and then recreate one by one each node for each items in the listbox... I just don't know how to proceed, unless you have a better way to do things?

Thanks man.

You can clear children easily by setting the InnerXml to nothing for the node.

Here is an example:

Dim doc As New XmlDocument
doc.Load("c:\temp\test.xml")
Dim node As XmlNode = doc.SelectSingleNode("//EMAILS")
node.InnerXml = ""

The resulting OuterXml would be:
    <EMAILS enabled="1"></EMAILS>

You could either create the hierarchy by adding children to the node, or just by setting InnerXml to a string (then you would only need to set a new value and not clear the value first).

Bob

Do you have an exemple how to proceed with the creation of the children nodes? That was my the purpose of my question actually ;) I might have explained badly..

Thanks Bob

Hi, it kind of work, but when I look at the file using notepad I get something like that :

&lt;p&gt;test@test.ca&lt;/p&gt;&lt;p&gt;test1@test.ca&lt;/p&gt;&lt;p&gt;test2@test.ca&lt;/p&gt;

When I open the file using Internet Explorer, everything is fine. The thing is that when I load the XML file in my program, I look for the node "p" (which is supposed to be <p> not &lt;p&gt;) and then I write evey item in the listbox. Now when I load my program, it doesn't show anything in the box because the node is not written properly.

Any ideas?

Thanks.

1) I am using 2003
2) When I created my test XML file, I left this declaration:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

3) I don't get that problem.

Bob

Hi I used <?xml version="1.0"?> instead of <?xml version="1.0" encoding="UTF-8" standalone="yes"?>. I changed it to yours but still do the same thing... I get :

<EMAILS enabled="1">&lt;p&gt;email@test.ca&lt;/p&gt;&lt;p&gt;email2@test.ca&lt;/p&gt;</EMAILS> in pure text (notepad).

I don't have a clue why it shows garbage instead of a simple <>.

More ideas?

I read something that I guess has something to do with the weird unreadable characters. It's all about CDATA and PCDATA : http://www.w3schools.com/dtd/dtd_building.asp

I just don't know how to handle that.

I ran this on 2005, using a Windows Forms application, and it ran just fine.  What kind of application is this code running under?

Bob