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POWP7 Select ObservableCollection Item using parameter passed from previous page
 

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  1. POWP7 Select ObservableCollection Item using parameter passed from previous page
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    <p>I have two table. Table 1 from a online service which forms the Listbox on my original Page. The second table is located in an internal DB and contains a uniqie field with the same values as a field in table1.</p> <p>I want to use a listbox in table 1 to load details from table2 in a seperate page.</p> <p>The code below is my code from my second page however it keeps throwing an exception "Items Collection must be empty before using ItemSource"</p> <p>Can someone correct this code or sugest better way to do this?</p> <pre><code>public partial class PlayerProfilePanoramaPage : PhoneApplicationPage { object _SelectedPlayer; string _playerName; public CollectionViewSource viewsource { get; set; } public PlayerProfilePanoramaPage() { InitializeComponent(); Loaded += new RoutedEventHandler(PhoneApplicationPage_Loaded); LoadPlayerProfile(); LoadPlayerDetails(); } private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e) { this.DataContext = _SelectedPlayer; } private void LoadPlayerProfile() { FrameworkElement root2 = Application.Current.RootVisual as FrameworkElement; var currentplayer = root2.DataContext as Mens_Leaders; _SelectedPlayer = currentplayer; _playerName = currentplayer.Name; } private void LoadPlayerDetails() { ObservableCollection&lt;PlayerProfileTable&gt; playerProfile = new ObservableCollection&lt;PlayerProfileTable&gt;(); viewsource = new CollectionViewSource(); viewsource.Filter += PlayerProfile_Filter; viewsource.Source = playerProfile; this.PlayerPanorama.ItemsSource = viewsource.View; } void PlayerProfile_Filter(object sender, FilterEventArgs e) { if (e.Item != null) e.Accepted = ((PlayerProfile)e.Item).Name.Equals(_playerName); } } </code></pre> <p>edit: Xaml is currently only simple to text that binding was working. Datacontexts and source bindings not defined in Xaml as defined in code. Xaml code provided below.</p> <pre><code>&lt;controls:Panorama Name="PlayerPanorama" Title="my application"&gt; &lt;!--Panorama item one--&gt; &lt;controls:PanoramaItem Name="panoramaPage1" Header="item1"&gt; &lt;Grid Name="Grid1"&gt; &lt;StackPanel&gt; &lt;TextBlock Height="30" Name="textBlock1" Text="{Binding PlayerName, FallbackValue=Name}" /&gt; &lt;TextBlock Height="30" Name="textBlock2" Text="{Binding Height, FallbackValue=Height}" /&gt; &lt;ScrollViewer Height="387" Name="scrollViewer1" Width="422"&gt; &lt;TextBlock Height="auto" Name="textBlock3" Text="{Binding ProfileBlurb, FallbackValue=Blurb}" /&gt; &lt;/ScrollViewer&gt; &lt;/StackPanel&gt; &lt;/Grid&gt; &lt;/controls:PanoramaItem&gt; </code></pre>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMichael Peberdy
    1. USMichael Peberdy
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COCan you post the XAML where you define the `PlayerPanorama` control?
      singulars
      1. POWP7 Select ObservableCollection Item using parameter passed from previous page
      1. USnemesv
    2. COYour PlayerPanorama ItemsCollection already has an item and the error message states it clearly that you can't change the ItemSource if it is not null.
      singulars
      1. POWP7 Select ObservableCollection Item using parameter passed from previous page
      1. USBigL
    3. COBigL that comment is not helpful as I obviously do not know how the ItemSource is defined and thus cousing the Error. Can you please tell me how I can fix this?
      singulars
      1. POWP7 Select ObservableCollection Item using parameter passed from previous page
      1. USMichael Peberdy
 

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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