Converting Windows Phone to Windows 8: Listing 1
The WebClient class, which downloads the XML feed as a string.
- By Nick Randolph
- 04/16/2012
public class MainPageViewModel
{
public ObservableCollection<FlickrImage> FlickrImages { get; private set; }
public MainPageViewModel()
{
FlickrImages = new ObservableCollection<FlickrImage>();
}
public void Load()
{
var wc = new WebClient();
wc.DownloadStringCompleted += DownloadFlickrCompleted;
wc.DownloadStringAsync(new Uri("http://api.flickr.com/services/feeds/photos_public.gne?format=xml&tags=wp7"));
}
private void DownloadFlickrCompleted(object sender, DownloadStringCompletedEventArgs e)
{
if (e.Error == null)
{
var xml = XElement.Parse(e.Result);
var ns = XNamespace.Get("http://www.w3.org/2005/Atom");
var images = (from entry in xml.Descendants(ns.GetName("entry"))
let title = entry.Element(ns.GetName("title"))
from links in entry.Descendants(ns.GetName("link"))
let rel=links.Attribute("rel")
where rel.Value == "enclosure"
let href = links.Attribute("href")
select new FlickrImage
{
ImageUrl = href.Value,
Title = title.Value
}).ToArray();
foreach (var img in images)
{
FlickrImages.Add(img);
}
}
}
public class FlickrImage
{
public string ImageUrl { get; set; }
public string Title { get; set; }
}
}
About the Author
Nick Randolph runs Built to Roam, a consulting company that specializes in training, mentoring and assisting other companies build mobile applications. With a heritage in rich client applications for both the desktop and a variety of mobile platforms, Nick currently presents, writes and educates on the Windows Phone platform.