You can check this with this way: … scrollViewer.ScrollChanged += OnScrollChanged; … private void OnScrollChanged(object sender, ScrollChangedEventArgs e) { var scrollViewer = (ScrollViewer)sender; if (scrollViewer.VerticalOffset == scrollViewer.ScrollableHeight) MessageBox.Show(“This is the end”); }
That happens because the ListView‘s (ListBox‘s, actually) content template wraps its items with a ScrollViewer by itself. The simplest way is to disable it by dropping your own Template for the inside ListView, one that doesn’t create a ScrollViewer: <ListView> <ListView.Template> <ControlTemplate> <ItemsPresenter></ItemsPresenter> </ControlTemplate> </ListView.Template> … </ListView> BTW the same happens if you have a … Read more
“ScrollViewer currently allows two scrolling modes: smooth pixel-by-pixel scrolling (CanContentScroll = false) or discrete item-by-item scrolling (CanContentScroll = true). Currently WPF supports UI virtualization only when scrolling by item. Pixel-based scrolling is also called “physical scrolling” and item-based scrolling is also called “logical scrolling”.” Virtualization requires an item-based scrolling so it can keep track of … Read more
By default when a control receives the logical focus, FrameworkElement calls its own BringIntoView method (from within its OnGotFocus method if it has keyboard focus). That results in a RequestBringIntoView event being generated that bubbles up the element tree to allow ancestor elements to bring that portion of the element into view. The ScrollViewer listens … Read more
In your example there are two controls inherited from ScrollViewer and ListBox, the animation is implemented by SplineDoubleKeyFrame [MSDN]. In my time, I realized animation scrolling via the attached dependency property VerticalOffsetProperty, which allows you to directly transfer offset scrollbar into a double animation, like this: DoubleAnimation verticalAnimation = new DoubleAnimation(); verticalAnimation.From = scrollViewer.VerticalOffset; verticalAnimation.To … Read more
Try a grid around your ScrollViwer instead of the StackPanel. I think StackPanel will provide as much height as the internal content wants, so here the Scrollviwer doesn’t work properly since its height is not get restricted by its parent control. You can understand the issue from the example below. <StackPanel> <ScrollViewer> <ItemsControl > <Rectangle … Read more
You can also create a behavior and attach it to the parent control (in which the scroll events should bubble through). // Used on sub-controls of an expander to bubble the mouse wheel scroll event up public sealed class BubbleScrollEvent : Behavior<UIElement> { protected override void OnAttached() { base.OnAttached(); AssociatedObject.PreviewMouseWheel += AssociatedObject_PreviewMouseWheel; } protected override … Read more
The ScrollBar template reaches out for system parameters to determine its width/height (depending on orientation). Therefore, you can override those parameters: <ScrollViewer> <ScrollViewer.Resources> <sys:Double x:Key=”{x:Static SystemParameters.VerticalScrollBarWidthKey}”>100</sys:Double> </ScrollViewer.Resources> </ScrollViewer>
No this is not possible (see snippet from MSDN below). However, if you want to have scrollbars and auto-resizing, consider using a Grid instead, and use the Margin property to position your items on this Grid.. Grid will tell the ScrollViewer how big he wants to be, and you will get the scrollbars.. Canvas will … Read more
This may help you.. private void ListViewScrollViewer_PreviewMouseWheel(object sender, System.Windows.Input.MouseWheelEventArgs e) { ScrollViewer scv = (ScrollViewer)sender; scv.ScrollToVerticalOffset(scv.VerticalOffset – e.Delta); e.Handled = true; }