Reading XML node based on element?

Question

I have a sample xml

<UserSettings>
   <Source>settings/subscriptions</Source>
   <DestinationController>UserSettings</DestinationController>
   <DestinationAction>GetUserPreferenceSettings</DestinationAction>
</UserSettings>

The reading of the XML using tag name(UserSettings) is done as shown below.

XmlDataDocument xmlDoc = new XmlDataDocument();
strFileName = System.Configuration.ConfigurationManager.AppSettings["UrlRoutingPath"].ToString();
strFileLocation = HttpContext.Current.Server.MapPath("~/" + strFileName);

xmlDoc.Load(strFileLocation);

XmlNodeList xmlNode = xmlDoc.GetElementsByTagName("UserSettings");

How do i read directly based on element "Source" ( example for m y above xml : read by passing settings/subscriptions to match the "Source" element ?) I know its real basics, but really confused!

Could you please rephrase your question?

KV Prajapati
– KV Prajapati

2011-12-10 06:43:07 +00:00
Commented Dec 10, 2011 at 6:43 — KV Prajapati
– KV Prajapati, Commented Dec 10, 2011 at 6:43
Hi AVD, Do you need any more info?

KeenUser
– KeenUser

2011-12-10 06:55:52 +00:00
Commented Dec 10, 2011 at 6:55 — KeenUser
– KeenUser, Commented Dec 10, 2011 at 6:55

KV Prajapati · Accepted Answer · 2011-12-10 07:09:49Z

1

Use Linq-XML (import System.Xml.Linq namespace).

XDocument doc = XDocument.Load(filename);
string value = doc.Root.Element("Source").Value;

answered Dec 10, 2011 at 7:09

KV Prajapati

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Comments

Anders Lindahl · Accepted Answer · 2011-12-10 07:36:01Z

0

I'd use an XmlDocument instead, in combination with SelectSingleNode that accepts an XPath expression. The following is untested:

XmlDocument doc = new XmlDocument();
strFileName = [...]
doc.Load(strFileName);
sourcetext=doc.SelectSingleNode("/UserSettings/Source").InnerText;

Edit:

Here's a rough example on how to get the DestinationController based on Source.

XmlDocument doc = new XmlDocument();
strFileName = [...]
doc.Load(strFileName);
dctext=doc.SelectSingleNode("/UserSettings/[Source=\"Your desired source\"]/DestinationController").InnerText;

edited Dec 10, 2011 at 7:36

answered Dec 10, 2011 at 6:59

Anders Lindahl

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6 Comments

KeenUser Over a year ago

thank you, what will the sourcetext contain? COz based on that I need to read the corresponding DstinationController and action , How do I do that?

Anders Lindahl Over a year ago

sourcetext will contain the text of the <Source> tag and its children.

KeenUser Over a year ago

ok is it possible to get the node tag(Usersetting) based on element(source)?

Anders Lindahl Over a year ago

Yes, you can do that either in your own code or directly in the xpath expression.

Anders Lindahl Over a year ago

Added a new xpath expression.

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