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POIn WPF, how do I select the treeview item under my cursor on right-click?
 

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  1. POIn WPF, how do I select the treeview item under my cursor on right-click?
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    <p>In WPF, when I right-click on a treeview item I would like it to be Selected/Activated before showing the context menu.</p> <p>This sounds pretty simple, but the inclusion of a hierachicalDataTemplate complicates things a little.</p> <p>I have the following treeview:</p> <pre><code>&lt;TreeView x:Name="trv" ContextMenu="{StaticResource contextMenu}" ItemTemplate="{StaticResource treeHierarchicalDataTemplate}" ItemsSource="{Binding Source={StaticResource meetingItems}}" &gt; &lt;TreeView.ItemContainerStyle&gt; &lt;Style TargetType="{x:Type TreeViewItem}"&gt; &lt;EventSetter Event="TreeViewItem.PreviewMouseRightButtonDown" Handler="trv_PreviewMouseRightButtonDown"/&gt; &lt;Setter Property="IsExpanded" Value="True"&gt;&lt;/Setter&gt; &lt;/Style&gt; &lt;/TreeView.ItemContainerStyle&gt; &lt;/TreeView&gt; </code></pre> <p>And here is my event handler...</p> <pre><code>private void trv_PreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e) { TreeViewItem item = sender as TreeViewItem; if (item != null) { item.Focus(); e.Handled = true; } } </code></pre> <p>Note how I add an EventSetter above. This ALMOST works. But it only selects the root-level treeview node (i.e. the root parent of the node on which I right click). This may be because of my hierarchical data template? This template can contain children OF THE SAME TYPE.</p> <p>Here is my hierarchical data template...</p> <pre><code>&lt;HierarchicalDataTemplate x:Key="treeHierarchicalDataTemplate" ItemsSource="{Binding Path=ChildMeetingItems}"&gt; &lt;HierarchicalDataTemplate.Triggers&gt; &lt;DataTrigger Binding="{Binding Path=Red}" Value="True"&gt; &lt;Setter TargetName="img" Property="Image.Source" Value="pack://siteoforigin:,,,/images/bookRed.png"&gt;&lt;/Setter&gt; &lt;/DataTrigger&gt; &lt;/HierarchicalDataTemplate.Triggers&gt; &lt;StackPanel x:Name="treeViewItemPanel" Background="Transparent" Orientation="Horizontal"&gt; &lt;Image Width="16" Height="16" x:Name="img" Margin="0,0,4,0" Source="pack://siteoforigin:,,,/images/bookGreen.png"&gt;&lt;/Image&gt; &lt;TextBlock Foreground="DarkGray" Text="{Binding DisplayIndex}" Margin="0,0,5,0"&gt;&lt;/TextBlock&gt; &lt;TextBlock Text="{Binding Summary}"&gt;&lt;/TextBlock&gt; &lt;/StackPanel&gt; &lt;/HierarchicalDataTemplate&gt; </code></pre> <p>Any idea on why only the root node instead of child nodes are selected when I right-click?</p>
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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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