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    <p>It appears that you don't have the event handler in the second view (and this is why it's not recommended to use the code behind).</p> <p>I know you said that the TreeView does not have the Double Click Command but that can't stop us from creating one for ourselves.</p> <p>Here's a basic class I wrote to expose a DoubleClickCommand to any Framework element</p> <pre><code> public class DoubleClickCommand { public static object GetDoubleClickParameter(DependencyObject obj) { return (object)obj.GetValue(DoubleClickParameterProperty); } public static void SetDoubleClickParameter(DependencyObject obj, object value) { obj.SetValue(DoubleClickParameterProperty, value); } public static ICommand GetDoubleClickCommand(DependencyObject obj) { return (ICommand)obj.GetValue(DoubleClickCommandProperty); } public static void SetDoubleClickCommand(DependencyObject obj, ICommand value) { obj.SetValue(DoubleClickCommandProperty, value); } public static readonly DependencyProperty DoubleClickParameterProperty = DependencyProperty.RegisterAttached("DoubleClickParameter", typeof(object), typeof(DoubleClickCommand), new UIPropertyMetadata(null)); public static readonly DependencyProperty DoubleClickCommandProperty = DependencyProperty.RegisterAttached("DoubleClickCommand", typeof(ICommand), typeof(DoubleClickCommand), new UIPropertyMetadata(null, OnDoubleClickCommandChanged)); private static void OnDoubleClickCommandChanged(DependencyObject d, DependencyPropertyChangedEventArgs args) { FrameworkElement elem = d as FrameworkElement; var newCommand = args.NewValue as ICommand; if (elem != null) { if (newCommand != null) { elem.MouseLeftButtonDown += elem_MouseLeftButtonDown; } else { elem.MouseLeftButtonDown -= elem_MouseLeftButtonDown; } } } private static void elem_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e) { if (e.ClickCount &gt; 1) { DependencyObject dep = sender as DependencyObject; ICommand command = GetDoubleClickCommand(dep) as ICommand; var parameter = GetDoubleClickParameter(dep); if (command != null) { if (command.CanExecute(parameter)) { command.Execute(parameter); } } } } } </code></pre> <p>To use it for your TreeViewItems, just set the Command and CommandParameter(optional) on your TreeView's ItemTemplate.</p>
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    1. USAlexDrenea
    1. USAlexDrenea
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    1. COVery interesting AlexDrenea. I will convert the code to vb.net, try it and let you know.
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      1. USMichel van Engelen
    2. CO*typeof(Behaviors)* should be *typeof(DoubleClickCommand)*, right?
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      1. USMichel van Engelen
    3. COyes, sorry for that, I renamed the class from Behaviors and forgot to change the properties... will update.
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