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    copied!<p>This is the way I found to get the <code>selectedTreeViewItem</code> value, I got it from <code>xmlElement</code>. </p> <p>Considering this xaml code:</p> <pre><code>&lt;i&gt; &lt;Window.Resources&gt; &lt;HierarchicalDataTemplate DataType="Filial" ItemsSource="{Binding XPath=./*}"&gt; &lt;StackPanel Orientation="Horizontal"&gt; &lt;Image Source="/WpfClient;component/Images/image4.png" Height="20"&gt;&lt;/Image&gt; &lt;TextBlock Margin="5,0,0,0" Text="{Binding XPath=@name}" FontSize="18" FontFamily="BankGothic Md BT" Foreground="#FF355CE5"/&gt; &lt;/StackPanel&gt; &lt;/HierarchicalDataTemplate&gt; &lt;HierarchicalDataTemplate DataType="Setor" ItemsSource="{Binding XPath=./*}"&gt; &lt;StackPanel Orientation="Horizontal"&gt; &lt;TextBlock Margin="5,0,0,0" Text="{Binding XPath=@name}" FontWeight="Bold" /&gt; &lt;/StackPanel&gt; &lt;/HierarchicalDataTemplate&gt; &lt;HierarchicalDataTemplate DataType="User"&gt; &lt;StackPanel Orientation="Horizontal"&gt; &lt;Image Source="{Binding XPath=@source}" Height="15"&gt;&lt;/Image&gt; &lt;TextBlock Margin="5,0,0,0" Text="{Binding XPath=@name}" FontStyle="Italic" /&gt; &lt;/StackPanel&gt; &lt;/HierarchicalDataTemplate&gt; &lt;XmlDataProvider x:Key="xmlDP" Source="Contatos.xml" XPath="/Contatos/Filial"&gt;&lt;/XmlDataProvider&gt; &lt;/Window.Resources&gt; &lt;Grid Width="Auto" Height="Auto"&gt; &lt;TreeView Name="tv" ItemsSource="{Binding }" DataContext="{StaticResource xmlDP}" Margin="0,0,0,0" TreeViewItem.Selected="tv_Selected"&gt; &lt;TreeView.ItemContainerStyle&gt; &lt;Style TargetType="TreeViewItem"&gt; &lt;Setter Property="TreeViewItem.IsExpanded" Value="True" /&gt; &lt;/Style&gt; &lt;/TreeView.ItemContainerStyle&gt; &lt;/TreeView&gt; &lt;/Grid&gt; &lt;/i&gt; &lt;/pre&gt; </code></pre> <p>and this c# codebehind: </p> <pre><code>private void tv_Selected(object sender, RoutedEventArgs e) { System.Xml.XmlElement xmlElement= (XmlElement)tv.SelectedItem; string mySelectedValue = xmlElement.Attributes[0].Value.ToString(); MessageBox.Show(mySelectedValue , "SelectedTreeValue", MessageBoxButton.OK, MessageBoxImage.Information); } &lt;/i&gt; </code></pre> <p>and this is the xml file:</p> <pre><code>&lt;i&gt; &lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;Contatos&gt; &lt;Filial name="Firm"&gt; &lt;Setor name="Sector 1"&gt; &lt;User name="user1" source="/WpfClient;component/Images/user.png"&gt;&lt;/User&gt; &lt;User name="user2" source="/WpfClient;component/Images/user.png"&gt;&lt;/User&gt; &lt;User name="user3" source="/WpfClient;component/Images/admin.png"&gt;&lt;/User&gt; &lt;/Setor&gt; &lt;Setor name="Sector40"&gt; &lt;User name="user43" source="/WpfClient;component/Images/admin.png"&gt;&lt;/User&gt; &lt;User name="user44" source="/WpfClient;component/Images/user.png"&gt;&lt;/User&gt; &lt;User name="user45" source="/WpfClient;component/Images/user.png"&gt;&lt;/User&gt; &lt;User name="user46" source="/WpfClient;component/Images/user.png"&gt;&lt;/User&gt; &lt;/Setor&gt; &lt;/Filial&gt; &lt;/Contatos&gt; &lt;/i&gt; </code></pre>
 

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