Iterating through all nodes in XML file

Question

I want to iterate through all nodes in an XML file and print their names  What is the best way to do this  I am using  NET 2 0

User · Answer

You can use XmlDocument  Also some XPath can be useful   Just a simple example  XmlDocument doc   new XmlDocument    doc Load  sample xml    XmlElement root   doc DocumentElement  XmlNodeList nodes   root SelectNodes  some node       You can also use XPath here foreach  XmlNode node in nodes          use node variable here for your beeds

User · Answer

A recursive algorithm that parses through an XmlDocument  Here is an example - Recursively reading an xml document and using regex to get contents  Here is another recursive example - http   www java2s com Tutorial CSharp 0540  XML LoopThroughXmlDocumentRecursively html

User · Answer

I think the fastest and simplest way would be to use an XmlReader  this will not require any recursion and minimal memory foot print   Here is a simple example  for compactness I just used a simple string of course you can use a stream from a file etc     string xml           lt parent gt         lt child gt           lt nested   gt         lt  child gt         lt child gt           lt other gt           lt  other gt         lt  child gt       lt  parent gt            XmlReader rdr   XmlReader Create new System IO StringReader xml      while  rdr Read            if  rdr NodeType    XmlNodeType Element              Console WriteLine rdr LocalName               The result of the above will be   parent child nested child other   A list of all the elements in the XML document

User · Answer

To iterate through all elements  XDocument xdoc   XDocument Load  input xml    foreach  XElement element in xdoc Descendants          Console WriteLine element Name

User · Answer

This is what I quickly wrote for myself   public static class XmlDocumentExtensions       public static void IterateThroughAllNodes          this XmlDocument doc           Action lt XmlNode gt  elementVisitor                if  doc    null  amp  amp  elementVisitor    null                        foreach  XmlNode node in doc ChildNodes                                doIterateNode node  elementVisitor                                      private static void doIterateNode          XmlNode node           Action lt XmlNode gt  elementVisitor                elementVisitor node            foreach  XmlNode childNode in node ChildNodes                        doIterateNode childNode  elementVisitor                       To use it  I ve used something like   var doc   new XmlDocument    doc Load somePath    doc IterateThroughAllNodes      delegate XmlNode node                      Do something with the node              Maybe it helps someone out there

[c#] Iterating through all nodes in XML file

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