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
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; }
To get a scrollbar for an ItemsControl, you can host it in a ScrollViewer like this: <ScrollViewer VerticalScrollBarVisibility=”Auto”> <ItemsControl> <uc:UcSpeler /> <uc:UcSpeler /> <uc:UcSpeler /> <uc:UcSpeler /> <uc:UcSpeler /> </ItemsControl> </ScrollViewer>
you can try this little helper function usage var scrollViewer = GetDescendantByType(yourListBox, typeof(ScrollViewer)) as ScrollViewer; helper function public static Visual GetDescendantByType(Visual element, Type type) { if (element == null) { return null; } if (element.GetType() == type) { return element; } Visual foundElement = null; if (element is FrameworkElement) { (element as FrameworkElement).ApplyTemplate(); } for … 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>
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”); }
“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
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
Ok. This is my take on what you described. It looks like this: Since I’m not applying any RenderTransforms, I get the desired Scrollbar / ScrollViewer functionality. MVVM, which is THE way to go in WPF. UI and data are independent thus the DataItems only have double and int properties for X,Y, Width,Height, etc that … Read more
This was bugging me for a while too, the trick is to put your stackpanel within a scrollviewer. Also, you need to ensure that you set the CanContentScroll property of the scroll viewer to True, here’s an example: <ScrollViewer Grid.Row=”1″ Margin=”299,12,34,54″ Name=”ScrollViewer1″ VerticalScrollBarVisibility=”Auto” HorizontalScrollBarVisibility=”Auto” Height=”195″ CanContentScroll=”True”> <StackPanel Name=”StackPanel1″ OverridesDefaultStyle=”False” Height=”193″ Width=”376″ VerticalAlignment=”Top” HorizontalAlignment=”Left”></StackPanel> </ScrollViewer>