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POGrouped ListBox and SelectionChanged
 

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    <p>I am new in WPF... :)</p> <p>I need ListBox to display grouped items, what works well.</p> <pre><code> &lt;ListBox Width="120" Loaded="ListBox_Loaded" SelectionChanged="ListBox_SelectionChanged" &gt; &lt;ListBox.GroupStyle&gt; &lt;GroupStyle /&gt; &lt;/ListBox.GroupStyle&gt; &lt;ListBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;ListBox ItemsSource="{Binding Items}" BorderThickness="0" /&gt; &lt;/DataTemplate&gt; &lt;/ListBox.ItemTemplate&gt; &lt;/ListBox&gt; </code></pre> <p>But in the *ListBox_SelectionChanged* SelectedIndex is still -1 and also SelectedItems collection is empty.</p> <p>Here is piece of code behind:</p> <pre><code> public ICollectionView Groups() { List&lt;Groups&gt; groups = new List&lt;AC.Groups&gt;(); groups.Add(new AC.Groups { Items = Properties.Settings.Default.Worker, Name="Worker" }); groups.Add(new AC.Groups { Items = Properties.Settings.Default.Flow, Name = "Flow" }); ICollectionView groups = CollectionViewSource.GetDefaultView(groups); groups.GroupDescriptions.Add(new PropertyGroupDescription("Name")); return groups; } private void ListBox_Loaded(object sender, RoutedEventArgs e) { (sender as ListBox).ItemsSource = Groups(); } private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e) { MessageBox.Show((sender as ListBox).SelectedIndex.ToString()); } class Groups { public System.Collections.Specialized.StringCollection Items { get; set; } public string Name { get; set; } public override string ToString() { return Name; } } </code></pre> <p>Thank you for help!</p>
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    1. USAthari
    1. USPatrik Polakovic
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    1. COWhat are you doing to trigger the `SelectionChanged` event? Are you manually selecting an item with the mouse or keyboard? Or are you setting something programmatically?
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      1. USMichael Gunter
    2. COAlso, is there a reason you have a `ListBox` for each item (in the `ItemTemplate`)? Have you considered using the `ListBox.GroupStyle` property? See this discussion: http://karlshifflett.wordpress.com/2009/06/10/wpf-sample-series-listbox-grouping-sorting-subtotals-and-collapsible-regions/
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      1. USMichael Gunter
 

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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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