Get Media Attributes From ASX files

3 replies. Latest Post by Jonathan Shen – MSFT on December 2, 2008.

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computer...

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8 Posts

Get Media Attributes From ASX files

11-26-2008 12:55 PM |

Hi,

I am wondering how one would go about populating a listbox with the title of the video. Or perhaps someone could recommend an alternative to using an ASX playlist as a source?

I am currently working with a dynamically generated asx playlist, which is created by reading a directory on my server (which is dreamhost) using php.

The asx file (while it has a .php extenstion) output contains:

<ASX version ="3.0">
<TITLE>ASX TEST</TITLE>
<ENTRY>
<TITLE>Holy Diver</TITLE>
<AUTHOR>Computerpro23</AUTHOR>
<REF HREF="http://computerpro23.dreamhosters.com/silverlight/videoplayer/uploads/Holy Diver.wmv"/>
</ENTRY><ENTRY>
<TITLE>My Curse</TITLE>
<AUTHOR>Computerpro23</AUTHOR>
<REF HREF="http://computerpro23.dreamhosters.com/silverlight/videoplayer/uploads/My Curse.wmv"/>
</ENTRY></ASX>

Even thought it still retains a php extension, it will play in an expression encoder template (you can view it here http://computerpro23.dreamhosters.com/silverlight/videoplayer/)

as an example say I would like to do is populate the list box of this mediaplayer (or a mediaplayer i create) with the TITLE information from each ENTRY in the asx file, how would i do that? Can someone give me some examples?

I am reletively new to SL, and .NET programming, I code all my applications in C#.

Another quick question, what are the supported playlist types for Silverlight 2? if the above cannot be done can someone recommend a way to do this?

--William Johnson

bryant

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1,558 Posts

Re: Get Media Attributes From ASX files

11-26-2008 3:14 PM |

You could do this using something like the following code:

WebClient wc = new WebClient();
wc.DownloadStringCompleted += new DownloadStringCompletedEventHandler(wc_DownloadStringCompleted);
wc.DownloadStringAsync(new Uri("http://computerpro23.dreamhosters.com/silverlight/videoplayer/"));


void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
  XElement xml = XElement.Parse(e.Result);
  var titles = (from t in xml.Descendants("ENTRY")
     select t.Descendants("TITLE").First().Value).ToList();

You'll need to add a reference to System.Xml.Linq in order to make this work. You'll probably also want to grab the URL for each title as well I imagine so that you can navigate to the right media file. To do this change what is selected in the Linq query.

-- bryant

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computer...

Member

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8 Posts

Re: Get Media Attributes From ASX files

11-26-2008 4:42 PM |

Hi Bryant,

Thanks for your answer, If you wouldnt mind, can you show me how i would wire it all up in XAML? Here is the code for my php page that generates the ASX code.

http://computerpro23.dreamhosters.com/silverlight/playlistgenerator.txt

--William Johnson

Jonathan...

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2,304 Posts

Re: Get Media Attributes From ASX files

12-02-2008 2:51 AM |

Hi William,

Code posted by bryant shows us how to use WebClient to download a file and then use Linq to XML to filter the elements. In your condition, you'd better to do the code migration work by yourself. For the details, please take a look at these video tutorials.

Best regards,

Jonathan

Jonathan Shen
Microsoft Online Community Support
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