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[WP7]XML, youtube feeds, C# and namespaces problems.

xml namespace

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#1 JackPanzer


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Posted 12 October 2012 - 09:42 AM

Hello everyone!

As the title of the post says, I'm having some problems when downloading and parsing a youtube XML feed. to be more precise, I'm testing with this one:


Due to I'm coding it for Windows Phone 7, I used a WebClient object to download the feeds. After I download the feed, I parse it into a new XML document, but when I try to access to any <entry> element, I throws me a null reference. First I will post part of the xml feed (is a huge file, so I'll only post part of it)

<?xml version='1.0' encoding='UTF-8'?>
<feed xmlns='http://www.w3.org/2005/Atom'


if (e.Error != null)
			 MessageBox.Show("No se ha podido obtener la informaciĆ³n de Internet");
			 //+ element.Name {{http://www.w3.org/2005/Atom}entry} System.Xml.Linq.XName
			 XNamespace name = "http://www.w3.org/2005/Atom";
			 XmlReader reader = XmlReader.Create(new StringReader(e.Result));
			 XDocument doc = Xdocument.Load(reader);
			 var list = doc.Descendants(name + "entry"); // Gives me an empty list

I'm pretty sure that I'm in the right way because I've been searching in google for it and yet found this same solution, but still throws me a null reference.

As a possible workaround I was thinking in erasing all the xmlns fields in <feed> with regex and then parse the whole string in the XDocument, but I'm worried about the CPU and memory consumption because knowing that I'm coding the application for a mobile platform the OS can forze close the application without advice.

If there is some mistake, wich part of the code is wrong and what can I do to fix it? Are there other workarounds?

Thanks for your time.

#2 kernelcoder


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Posted 16 December 2012 - 07:45 AM

In one of the projects where I created an 'RSS Crawler' where I needed to read and parse RSS feed. I used XPathDocument and XPathNavigator. I hope it will work for you as well. Can you give a try and get us with your feedback?

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