WPF

<ListView 
    VirtualizingStackPanel.IsVirtualizing="True"
    VirtualizingStackPanel.VirtualizationMode="Recycling" 
    ...
/><a href="http://www.quickzip.org">QuickZip</a>

yuripon wrote:

I create it in SL 3..

John Simmons / outlaw programmer wrote:

Vista 64bit

public class DialogBehavior
   {
      public static DependencyProperty DisplayModalProperty = DependencyProperty.RegisterAttached("DisplayModalProperty",
                    typeof(Boolean),
                    typeof(DialogBehavior),
                    new UIPropertyMetadata(false, AttachToDataContextChanged));

      public static void SetDisplayModal(DependencyObject target, Boolean value)
      {
         target.SetValue(DialogBehavior.DisplayModalProperty, value);
      }

      public static Boolean GetDisplayModal(DependencyObject target)
      {
         return (Boolean)target.GetValue(DisplayModalProperty);
      }

      private static void AttachToDataContextChanged(DependencyObject target, DependencyPropertyChangedEventArgs e)
      {
         FrameworkElement element = target as FrameworkElement;

            element.DataContextChanged += (a, b) =>
            {
               var dialog = new Dialog();
               dialog.DataContext = b.NewValue;
               dialog.Owner = Application.Current.MainWindow;

               if (GetDisplayModal(target))
               {
                  dialog.ShowDialog();
               }
               else
               {
                  dialog.Show();
               }
            };
         }
      }
   }

<HierarchicalDataTemplate DataType="{x:Type ViewModels:TreeNodeViewModel}" 
                             ItemsSource="{Binding Children}">
    <StackPanel>
        <FrameworkElement DataContext="{Binding Path=ModalDialogViewModel}">
            <behaviour:DialogBehavior.DisplayModal>True</behaviour:DialogBehavior.DisplayModal>
        </FrameworkElement>
        <TextBlock Text="{Binding DisplayName}" />
    </StackPanel>
</HierarchicalDataTemplate>

public static DependencyProperty DisplayModalProperty = DependencyProperty.RegisterAttached("DisplayModal",
             typeof(Boolean),
             typeof(DialogBehavior),
             new UIPropertyMetadata(false, AttachToDataContextChanged));