Read First Node from XMLDocument

Question

I receive message in XML string; that I load into XmlDocument; but second node is different every time; I have given example below are three examples:

 <Message> 
    <Event1 Operation="Amended" Id="88888">Other XML Text</Event1>
 </Message>
 <Message>
    <Event2 _Operation_="Cancelled" Id="9999999"> Other XML Text </Event2>
 </Message> 
 <Message> 
    <Event3 Operation="Cancelled" Id="22222"> Other XML Text </Event3>
 </Message>

Now, I want to find out whether second node is Event1 or Event2 or Event3 and also what is value of Operation e.g. "Amended", "Cancelled", "Ordered" ?

score 9 · Accepted Answer · answered Feb 08 '11 at 16:23

You can try

        XmlDocument xml = new XmlDocument();
        xml.LoadXml("<Message><Event1 Operation=\"Amended\" Id=\"88888\"> Other XML Text</Event1></Message>");
        Debug.WriteLine(xml.DocumentElement.ChildNodes[0].Name);
        Debug.WriteLine(xml.DocumentElement.ChildNodes[0].Attributes["Operation"].Value);

score 2 · Answer 2 · answered Feb 08 '11 at 16:16

XmlDocument oDoc = XmlDocument.Load(yourXmlHere);
// Your message node.
XmlNode oMainNode = oDoc.SelectSingleNode("/Message");
// Message's first subnode (Event1, Event2, ...)
XmlNode oEventNode = oMainNode.ChildNodes[0];
// Event1, Event2, ...
string sEventNodeName = oEventNode.Name;
// Value of operation attribute.
string sOpValue = oEventNode.Attributes["Operation"].Value;

score 2 · Answer 3 · edited Feb 08 '11 at 16:32

2

Off the top of my head, you could check the DocumentElement.FirstChild.Name on the XmlDocument object to retrieve the name of the first child element of the Message element.

The Operation attribute can be read using DocumentElement.FirstChild.GetAttribute("Operation").

edited Feb 08 '11 at 16:32

marc_s

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answered Feb 08 '11 at 16:19

Matt Hogan-Jones

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Read First Node from XMLDocument

3 Answers3