Question

I’m trying to code an rssreader and would be pleased for some architecture hints.
My reader main window hosts two wpf pages which are loaded into frames, it’s a “bottombar” where user can select different rss providers. In the main frame (or page) is my listview.
Because of an loading animation and UI Freeze I’ve an extra class with a backgroundworker which fills an observable collection with RSS Data, when I’m debugging, it fills my collection correctly.
In main page i’m setting the datacontext to this observable collection but listview doesn’t show anything, here I’m stuck.

That’s what I have:

MainPage XAML:

> <ListBox ItemsSource="{Binding}" DisplayMemberPath="RssTitle"
> IsSynchronizedWithCurrentItem="True"
> SelectionChanged="itemsList_SelectionChanged"
> ItemContainerStyle="{DynamicResource listboxitem_style}" Height="396"
> HorizontalAlignment="Left" Margin="126,12,0,0" Name="ListBox1"
> VerticalAlignment="Top" Width="710"></ListBox>

ListBox1.DataContext = GetRssItems.observable_list;

Bottompage to get another rss feed:

GetRssItems getitems = new GetRssItems();
GetRssItems.observable_collection = null;
getitems.start_bg_worker("url");

GetRssItems.cs

public class GetRssItems
    {
        public static ObservableCollection<RSSItem> observable_collection { get; set; }
        public static string tmp_url;
        public BackgroundWorker worker = new BackgroundWorker();


        public void start_bg_worker(string url)
        {


            if (!worker.IsBusy)
            {

                worker.DoWork += new DoWorkEventHandler(worker_DoWork);
                worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_RunWorkerCompleted);
                worker.RunWorkerAsync(url);
            }
        }
}

In BackgroundWorkers DoWork I’m receiving rss items with linq and add it to my observable collection:

  observable_collection.Add(new RSSItem(item.tmp_Title, item.tmp_Link, item.tmp_Description, item.tmp_pubDate, item.tmp_ImageUrl));

Seperate class RSSItem.cs

public class RSSItem
    {
         public string RssTitle { get; set; }
            public string RssLink { get; set; }
            public string RssDescription { get; set; }
            public string RsspubDate { get; set; }
            public string RssImageUrl { get; set; }

            public RSSItem(string rsstitle, string rsslink, string rssdescription, string rsspubdate, string rssimageurl)
            {
                RssTitle = rsstitle;
                RssLink = rsslink;
                RssDescription = rssdescription;
                RsspubDate = rsspubdate;
                RssImageUrl = rssimageurl;
            }
    }

Thanks for your time and hints.
Best Regards

Answer 1

use the following:
the data context should be the Object getitems

<ListBox  ItemsSource="{Binding observable_collection}"  Height="167" Margin="0" Name="listBox1" Width="330" FontSize="24" HorizontalAlignment="Center" VerticalAlignment="Top">
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="{Binding RssTitle}"  FontWeight="Bold" FontSize="16" />
                                <TextBlock Text="{Binding RssLink}"  FontSize="16"/>
                            </StackPanel>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>

PS:
your naming is HORRBILE