Question

I have an xml like

<?xml version='1.0' encoding='UTF-8'?>
<feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearch/1.1/' xmlns:docs='http://schemas.google.com/docs/2007' xmlns:batch='http://schemas.google.com/gdata/batch' xmlns:gd='http://schemas.google.com/g/2005' gd:etag='W/&quot;C0EARXY8eit7ImA9WhVREE0.&quot;'>

<id>https://docs.google.com/feeds/default/private/full</id>
<updated>2012-03-17T16:27:24.872Z</updated>
<category scheme='http://schemas.google.com/g/2005#kind' term='http://schemas.google.com/docs/2007#item' label='item'/>

<title>Available Documents - </title>

<link rel='alternate' type='text/html' href='https://docs.google.com'/>
<link rel='http://schemas.google.com/g/2005#resumable-create-media' type='application/atom+xml' href='https://docs.google.com/feeds/upload/create-session/default/private/full'/>
<link rel='http://schemas.google.com/docs/2007#alt-post' type='application/atom+xml' href='https://docs.google.com/feeds/upload/file/default/private/full'/>
<link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='https://docs.google.com/feeds/default/private/full'/>
<link rel='http://schemas.google.com/g/2005#post' type='application/atom+xml' href='https://docs.google.com/feeds/default/private/full'/>
<link rel='http://schemas.google.com/g/2005#batch' type='application/atom+xml' href='https://docs.google.com/feeds/default/private/full/batch'/>
<link rel='self' type='application/atom+xml' href='https://docs.google.com/feeds/default/private/full/-/document'/>

<some more tags />

<entry gd:etag='&quot;E0UXTh9YDSt7ImBr&quot;'>
<some more tags />
<title>hi</title>
<link rel='http://schemas.google.com/docs/2007#parent' type='application/atom+xml' href=''/>
<link rel='alternate' type='application/atom+xml' href=''/>
<link rel='http://schemas.google.com/docs/2007#embed' type='application/atom+xml' href=''/>
<link rel='http://schemas.google.com/docs/2007#icon' type='application/atom+xml' href=''/>
<link rel='http://schemas.google.com/g/2005#resumable-edit-media' type='application/atom+xml' href=''/>
<link rel='http://schemas.google.com/docs/2007#alt-edit-media' type='application/atom+xml' href=''/>
<link rel='http://schemas.google.com/docs/2007/thumbnail' type='application/atom+xml' href=''/>
<link rel='self' type='application/atom+xml' href=''/>
<link rel='edit' type='application/atom+xml' href=''/>
<link rel='edit-media' type='application/atom+xml' href=''/>
...
<some more tags />
...
</entry>
<entry>
...
</entry>
...

I want to fetch the attribute href of the element <link> whose rel="http://schemas.google.com/g/2005#resumable-create-media"

What I’m doing right now is I’m getting list of nodes with xmlnode = doc.GetElementsByTagName("link"); then I’m iterating through all of them and fetching the first one whose rel="http://schemas.google.com/g/2005#resumable-create-media"

So essentially I’m looping through all the nodes <link> when I’m just interested in those which are next child of node <feed> and are not inside node <entry>.
A <feed> have multiple <entry> nodes which in turn have multiple <link> tags.
And instead I would like to just get the list of <link> which are directly in <feed> and not in <entry>.

Any help would be appreciated.

Answer 1

I typically use the System.Xml.Linq.XElement classes for working with xml in C#. If I understand your problem, it could look like this:

XElement input = XElement.Load(filename);
foreach(XElement feedChild in input.Elements("feed"))
  foreach(XElement linkChild in feedChild.Elements("link"))