virtualizingstackpanel

I want to display a important list of items using an ItemsControl. The reason why I'm using an ItemsControl is that the DataTemplate is much more complex in the application I'm working on: The sample code provided only reflects the sizing problem I have. I would like : the ItemsControl to be virtualized because there is many items to display its size to expand to its parent container automatically (the Grid) <Grid> <ItemsControl x:Name="My" ItemsSource="{Binding Path=Names}"> <ItemsControl.Template> <ControlTemplate> <StackPanel> <StackPanel> <TextBlock Text="this is a title" FontSize="15" />

I've got a problem here, I want to show some items in a TreeView, about 100.000 Elements. If i use the default WPF TreeView everything seems to work, but if i use a custom-TreeView (which is at the moment only an ItemsControl), virtualization doesn't seem to work anymore. While researching over the web, I've tried some solutions but none of them seems to work... Here's my xaml: <Style TargetType="{x:Type my:MultiSelectionTreeView}"> <Setter Property="TreeView.Background" Value="Transparent"/> <Setter Property="VirtualizingStackPanel.IsVirtualizing" Value="True"/> <Setter Property=

What is the difference between a stackpanel and a virtualizingstackpanel in WPF? A VirtualizingStackPanel can offer performance benefits when working with very large collections. It does so by only rendering and processing a subset of the data which is visible to the user vs. processing the entire list of data. By creating only UI elements for the visible items, this can greatly reduce the amount of work it has to do. This is really only handy though if You are data binding non-UI elements or elements for which UI must be created in the particular panel You are data binding a lot of data A

I am using a StackPanel to layout several controls vertically (ie, Title, sub titles, listbox, separator, listbox, etc). The StackPanel is a child of a ScrollViewer to ensure its content is always scrollable. One of the controls in the StackPanel is a ListBox. Its ItemsSource is data bound to a huge collection, and a complex DataTemplate is used to realise each item. Unfortunately, I'm getting really poor performance (high cpu/memory) with it. I tried setting the ListBox's ItemsPanel to a VirtualizingStackPanel, and overriding its ControlTemplate to only an ItemsPresenter (remove the ListBox's

I have a ItemsControl which displays its items in a ScrollViewer , and does virtualisation. I am trying to scroll that ScrollViewer to an (offscreen, hence virtualised) item it contains. However, since the item is virtualised, it doesn't really exist on the screen and has no position (IIUC). I have tried BringIntoView on the child element, but it doesn't scroll into view. I have also tried manually doing it with TransformToAncestor , TransformBounds and ScrollToVerticalOffset , but TransformToAncestor never returns (I guess also because of the virtualisation, because it has no position, but I