Ensure adorner isn't rendered when ListBox height is too small

r-smith · Mar 11, 2022 · c412495 · c412495
1 parent 0d19be1
commit c412495
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/vmPing/Controls/AutoScrollListBox.cs b/vmPing/Controls/AutoScrollListBox.cs
@@ -57,8 +57,9 @@ protected override void OnRender(DrawingContext drawingContext)
 
         private void Scroll_ScrollChanged(object sender, ScrollChangedEventArgs e)
         {
+            const double MinimumAdornerHeight = 11.0;
             ScrollViewer scrollViewer = (ScrollViewer)sender;
-            if (scrollViewer.VerticalOffset == scrollViewer.ScrollableHeight)
+            if (scrollViewer.VerticalOffset == scrollViewer.ScrollableHeight || scrollViewer.ActualHeight < MinimumAdornerHeight)
             {
                 _adornerLayer.Remove(_autoScrollAdorner);